Drive, reward sensitivity and the flattening of both.
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Ḥadīth
الحديث6 shownSound narrations only, and never matched by text. A narration appears here because a compiler filed it under a chapter this subject maps to, or because someone read it and anchored it. Each row says which.
حَدَّثَنَا هَدَّابُ بْنُ خَالِدٍ، حَدَّثَنَا حَمَّادُ بْنُ سَلَمَةَ، ح وَحَدَّثَنِي زُهَيْرُ بْنُ حَرْبٍ، حَدَّثَنَا مُعَاذُ بْنُ مُعَاذٍ الْعَنْبَرِيُّ، ح وَحَدَّثَنِي مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى، حَدَّثَنَا الْمُعْتَمِرُ، ح وَحَدَّثَنَا إِسْحَاقُ، بْنُ إِبْرَاهِيمَ أَخْبَرَنَا جَرِيرٌ، كُلُّهُمْ عَنْ سُلَيْمَانَ التَّيْمِيِّ، ح وَحَدَّثَنَا أَبُو كَامِلٍ، فُضَيْلُ بْنُ حُسَيْنٍ - وَاللَّفْظُ لَهُ - حَدَّثَنَا يَزِيدُ بْنُ زُرَيْعٍ، حَدَّثَنَا التَّيْمِيُّ، عَنْ أَبِي عُثْمَانَ، عَنْ أُسَامَةَ بْنِ زَيْدٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " قُمْتُ عَلَى بَابِ الْجَنَّةِ فَإِذَا عَامَّةُ مَنْ دَخَلَهَا الْمَسَاكِينُ وَإِذَا أَصْحَابُ الْجَدِّ مَحْبُوسُونَ إِلاَّ أَصْحَابَ النَّارِ فَقَدْ أُمِرَ بِهِمْ إِلَى النَّارِ وَقُمْتُ عَلَى بَابِ النَّارِ فَإِذَا عَامَّةُ مَنْ دَخَلَهَا النِّسَاءُ " .
Usama b. Zaid reported that Allah's Messenger (way peace be upon him) said:I stood at the door of Paradise and I found that the overwhelming majority of those who entered therein was that of poor persons and the wealthy persons were detained to get into that. The denizens of Hell were commanded to get into Hell, and I stood upon the door of Fire and the majority amongst them who entered there was that of women
حَدَّثَنَا أَبُو كُرَيْبٍ، حَدَّثَنَا أَبُو أُسَامَةَ، عَنْ سَعِيدِ بْنِ أَبِي عَرُوبَةَ، سَمِعَ أَبَا رَجَاءٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم فَذَكَرَ مِثْلَهُ .
This hadith is narrated likewise through another chain of transmitters
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ بْنِ قَعْنَبٍ، حَدَّثَنَا سُلَيْمَانُ، - يَعْنِي ابْنَ بِلاَلٍ - عَنْ جَعْفَرٍ، عَنْ أَبِيهِ، عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم مَرَّ بِالسُّوقِ دَاخِلاً مِنْ بَعْضِ الْعَالِيَةِ وَالنَّاسُ كَنَفَتَهُ فَمَرَّ بِجَدْىٍ أَسَكَّ مَيِّتٍ فَتَنَاوَلَهُ فَأَخَذَ بِأُذُنِهِ ثُمَّ قَالَ " أَيُّكُمْ يُحِبُّ أَنَّ هَذَا لَهُ بِدِرْهَمٍ " . فَقَالُوا مَا نُحِبُّ أَنَّهُ لَنَا بِشَىْءٍ وَمَا نَصْنَعُ بِهِ قَالَ " أَتُحِبُّونَ أَنَّهُ لَكُمْ " . قَالُوا وَاللَّهِ لَوْ كَانَ حَيًّا كَانَ عَيْبًا فِيهِ لأَنَّهُ أَسَكُّ فَكَيْفَ وَهُوَ مَيِّتٌ فَقَالَ " فَوَاللَّهِ لَلدُّنْيَا أَهْوَنُ عَلَى اللَّهِ مِنْ هَذَا عَلَيْكُمْ " .
Jabir b. Abdullah reported that Allah's Apostle (ﷺ) happened to walk through the bazar coming from the side of 'Aliya and the people were on both his sides. There he found a dead lamb with very short ears. He took hold of his ear and said:Who amongst you would like to have this for a dirham? They said: We do not like to have it even for less than that as it is of no use to us. He said: Do you wish to have it (free of any cost)? They said: By Allah, even if it were alive (we would not have liked to possess that), for there is defect in it as its ear is very short; now it is dead also. Thereupon Allah's Messenger (ﷺ) said: By Allah, this world is more insignificant in the eye of Allah than it (this dead lamb) is in your eye
حَدَّثَنِي مُحَمَّدُ بْنُ الْمُثَنَّى الْعَنَزِيُّ، وَإِبْرَاهِيمُ بْنُ مُحَمَّدِ بْنِ عَرْعَرَةَ السَّامِيُّ، قَالاَ حَدَّثَنَا عَبْدُ الْوَهَّابِ، - يَعْنِيَانِ الثَّقَفِيَّ - عَنْ جَعْفَرٍ، عَنْ أَبِيهِ، عَنْ جَابِرٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم . بِمِثْلِهِ غَيْرَ أَنَّ فِي حَدِيثِ الثَّقَفِيِّ فَلَوْ كَانَ حَيًّا كَانَ هَذَا السَّكَكُ بِهِ عَيْبًا .
Jabir reported Allah's Apostle (ﷺ) narrating a hadith like this with a slight variation of wording
حَدَّثَنَا الْمَكِّيُّ بْنُ إِبْرَاهِيمَ، أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ سَعِيدٍ ـ هُوَ ابْنُ أَبِي هِنْدٍ ـ عَنْ أَبِيهِ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم " نِعْمَتَانِ مَغْبُونٌ فِيهِمَا كَثِيرٌ مِنَ النَّاسِ، الصِّحَّةُ وَالْفَرَاغُ ". قَالَ عَبَّاسٌ الْعَنْبَرِيُّ حَدَّثَنَا صَفْوَانُ بْنُ عِيسَى، عَنْ عَبْدِ اللَّهِ بْنِ سَعِيدِ بْنِ أَبِي هِنْدٍ، عَنْ أَبِيهِ، سَمِعْتُ ابْنَ عَبَّاسٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم مِثْلَهُ.
Narrated Ibn `Abbas:The Prophet (ﷺ) said: "There are two blessings that many people are deceived into losing: health and free time
حَدَّثَنِي أَحْمَدُ بْنُ الْمِقْدَامِ، حَدَّثَنَا الْفُضَيْلُ بْنُ سُلَيْمَانَ، حَدَّثَنَا أَبُو حَازِمٍ، حَدَّثَنَا سَهْلُ بْنُ سَعْدٍ السَّاعِدِيُّ، كُنَّا مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فِي الْخَنْدَقِ وَهْوَ يَحْفِرُ وَنَحْنُ نَنْقُلُ التُّرَابَ وَيَمُرُّ بِنَا فَقَالَ " اللَّهُمَّ لاَ عَيْشَ إِلاَّ عَيْشُ الآخِرَهْ، فَاغْفِرْ لِلأَنْصَارِ وَالْمُهَاجِرَهْ ". تَابَعَهُ سَهْلُ بْنُ سَعْدٍ عَنِ النَّبِيِّ صلى الله عليه وسلم مِثْلَهُ.
Narrated Sahl bin Sa`d As-Sa`idi:We were in the company of Allah's Messenger (ﷺ) in (the battle of) Al-Khandaq, and he was digging the trench while we were carrying the earth away. He looked at us and said, "O Allah! There is no life worth living except the life of the Hereafter, so (please) forgive the Ansar and the Emigrants
Classical works
كتب التراث6 shownArabic originals, reached through the subject’s Arabic senses. Interpretive sources, never proof of a ruling.
mukhtasar-minhaj §321mukhtasar-minhajArabic sense: الفتور, الكسل, فتور, كسل
ومن آدابه: أن لا يمتلئ من الطعام فى الليل، بل يأكل بمقدار، فانه ما ملأ ابن آدم وعاء شرا من بطن. ومتى شبع أول الليل لم ينتفع بنفسه فى باقيه، وكذلك إذا شبع وقت السحر لم ينتفع بنفسه إلى قريب من الظهر، لأن كثرة الأكل تورث الكسل والفتور، ثم يفوت المقصود من الصيام بكثرة الأكل، لأن المراد منه أن يذوق طعم الجوع، ويكون تاركا للمشتهى.
madarij §3757madarijArabic sense: الفتور, الكسل, فتور, كسل
بين القبض والبسط أي ينقطع إلى صحبة الحال وهو الوارد الذي يرد على القلب من تأثيره بالمعاملة السالب لوصف الكسل والفتور الجالب له إلى مرافقة الرفيق الأعلى الذين أنعم الله عليهم فينتقل من مقام العلم إلى مقام الكشف ومن مقام رسوم الأعمال إلى مقام حقائقها وأذواقها ومواجيدها وأحوالها فيترقى من الإسلام إلى الإيمان ومن الإيمان إلى الإحسان
wabil-sayyib §43wabil-sayyibArabic sense: الفتور, الكسل, فتور, كسل
فحقيقة التعظيم للامر والنهي ان لا يعارضا بترخص جاف ولا يعرضا لتشديد غال فان المقصود هو الصراط المستقيم الموصل إلى الله عز وجل بسالكه وما امر الله عز وجل بأمر الا وللشيطان فيه نزغتان اما تقصير وتفريط واما افراط وغلو فلا يبالي بما ظفر من العبد من الخطيئتين فانه ياتي إلى قلب العبد فيستامه فان وجد فيه فتورا وتوانيا وترخيصا اخذه من هذه الخطة فثبطه واقعده وضربه بالكسل والتواني والفتور وفتح له باب التاويلات والرجاء وغير ذلك حتى ربما ترك العبد المامور جملة
fawaid §490fawaidArabic sense: الفتور, الكسل, فتور, كسل
العزيمة فيصدقه في عزمه وفي فعله قال تعالى فإذا عزم الأمر فلو صدقوا الله لكان خيرا لهم فسعادته في صدق العزيمة وصدق الفعل فصدق العزيمة جمعها وجزمها وعدم التردد فيها بل تكون عزيمة لا يشوبها تردد ولا تلوم فإذا صدقت عزيمته بقى عليه صدق الفعل وهو استفراغ الوسع وبذل الجهد فيه وأن لا يتخلف عنه بشيء من ظاهره وباطنه فعزيمة القصد تمنعه من ضعف الإرادة والهمة وصدق الفعل يمنعه من الكسل والفتور ومن صدق الله في جميع أموره صنع الله له فوق ما يصنع لغيره وهذا الصدق معنى يلتئم من صحة الإخلاص وصدق التوكل فأصدق الناس من صح إخلاصه وتوكله
madarij §6757madarijArabic sense: الفتور, الكسل, فتور, كسل
فالإيمان بالصفات ومعرفتها وإثبات حقائقها وتعلق القلب بها وشهوده لها هو مبدأ الطريق ووسطه وغايته وهو روح السالكين وحاديهم إلى الوصول ومحرك عزماتهم إذا فتروا ومثير هممهم إذا قصروا فإن سيرهم إنما هو على الشواهد فمن كان لا شاهد له فلا سير له ولا طلب ولا سلوك له وأعظم الشواهد صفات محبوبهم ونهاية مطلوبهم وذلك هو العلم الذي رفع لهم في السير فشمروا إليه كما قالت عائشة رضي الله عنها من رأى رسول الله فقد رآه غاديا رائحا لم يضع لبنة على لبنة ولكن رفع له علم فشمر إليه ولا يزال العبد في التواني والفتور والكسل حتى يرفع الله عز وجل له بفضله ومنه علما يشاهده بقلبه فيشمر إليه ويعمل عليه
madarij §1930madarijArabic sense: الفتور, الكسل, فتور, كسل
قال الله تعالى : ففروا إلى الله الذاريات : 50 ] وحقيقة الفرار : الهرب من شيء إلى شيء وهو نوعان : فرار السعداء وفرار الأشقياء ففرار السعداء : الفرار إلى الله عز وجل وفرار الأشقياء : الفرار منه لا إليه وأما الفرار منه إليه : ففرار أوليائه قال ابن عباس في قوله تعالى : ففروا إلى الله الذاريات : 50 ] : فروا منه إليه واعملوا بطاعته وقال سهل بن عبدالله : فروا مما سوى الله إلى الله وقال آخرون : اهربوا من عذاب الله إلى ثوابه بالإيمان والطاعة وقال صاحب المنازل : هو الهرب مما لم يكن إلى من لم يزل وهو على ثلاث درجات : فرار العامة من الجهل إلى العلم عقدا وسعيا ومن الكسل إلى التشمير جدا وعزما ومن الضيق إلى السعة ثقة ورجاء يريد بما لم يكن الخلق وبما لم يزل الحق وقوله : فرار العامة : من الجهل إلى العلم عقدا وسعيا الجهل نوعان : عدم العلم بالحق النافع وعدم العمل بموجبه ومقتضاه فكلاهما جهل لغة وعرفا وشرعا وحقيقة قال موسى : أعوذ بالله أن أكون من الجاهلين البقره : 67 ] لما قال له قومه : أتتخذنا هزوا البقره :
Research library
المكتبة البحثية1,483 works heldPeer-reviewed work held with its DOI and abstract, labelled with the study design its publication types report. None of it has been read or assessed, so nothing here may be cited as showing anything. Retracted work is held for the record but never listed; a review that a later version replaced is listed under its replacement and marked.
10.1016/j.pnpbp.2021.110289Progress in neuro-psychopharmacology & biological psychiatry (2021)MEDLINE-indexed journal, not yet read by us; matched on Anhedonia, Motivation, Reward, Ventral Tegmental Area, anhedonia Anhedonia as a central factor in depression: Neural mechanisms revealed from preclinical to clinical evidence.: Anhedonia is one of the core symptoms of major depressive disorder (MDD), which is often inadequately treated by traditional antidepressants. The modern framework of anhedonia extends the definition from impaired consummatory pleasure or interest in rewards to a broad spectrum of deficits that impact functions such as reward anticipation, approach motivation, effort expenditure, reward valuation, expectation, and reward-cue association learning. Substantial preclinical and clinical research has
10.1016/j.jad.2024.09.007Journal of affective disorders (2024)MEDLINE-indexed journal, not yet read by us; matched on Anhedonia, Reward, anhedonia, reward sensitivity How to improve reward sensitivity - Predictors of long-term effects of a randomized controlled online intervention trial.: Background: Reward sensitivity is a central maintaining factor of depression. Current treatments fail at sufficiently and reliably modifying reward processing. Therefore, we employed interventions targeting reward sensitivity and evaluated the long-term efficacy of different online interventions, additionally exploring predictors of changes in reward sensitivity.
Methods: This four-arm randomized controlled trial (RCT) tested the long-term stability of treatment effects during a four-month follo
10.1016/j.brat.2023.104455Behaviour research and therapy (2024)MEDLINE-indexed journal, not yet read by us; matched on Reward, Anhedonia, anhedonia, reward sensitivity Effectiveness of behavioral activation and mindfulness in increasing reward sensitivity and reducing depressive symptoms - A randomized controlled trial.: Reward insensitivity is a potential key mechanism regarding the maintenance of depression. However, there is a lack of research examining and comparing the effectiveness of different psychological interventions in modifying reward insensitivity. This four-arm randomized controlled trial (RCT) investigated a two-week online intervention. After screening for eligibility, a total of 336 participants were randomized, and 224 participated per-protocol. Participants were assigned to either a) behavior
'We pledge to improve the health of our entire community': Improving health worker motivation and performance in Bihar, India through teamwork, recognition, and non-financial incentives.: Background: Motivation is critical to health worker performance and work quality. In Bihar, India, frontline health workers provide essential health services for the state's poorest citizens. Yet, there is a shortfall of motivated and skilled providers and a lack of coordination between two cadres of frontline health workers and their supervisors. CARE India developed an approach aimed at improving health workers' performance by shifting work culture and strengthening teamwork and motivation. Th
A systematic review and meta-analysis of the effort-reward imbalance model of workplace stress with indicators of immune function.: Objective: Despite considerable research into associations between the effort reward imbalance (ERI) model and various health outcomes over the past 20years, the underlying mechanisms responsible for the association remain unclear. Recently, ERI investigations have examined associations with immune sub-systems (e.g., leukocytes, cytokines and immunoglobulins). Synthesis of the amalgamated research evidence will aid clarity to this field of enquiry. We conducted a meta-analysis and reviewed the a
The utility of monetary contingency contracts for weight loss: a systematic review and meta-analysis.: Financial incentives to improve health have received increasing attention, but are subject to ethical concerns. Monetary Contingency Contracts (MCCs), which require individuals to deposit money that is refunded contingent on reaching a goal, are a potential alternative strategy. This review evaluates systematically the evidence for weight loss-related MCCs. Randomised controlled trials testing the effect of weight loss-related MCCs were identified in online databases. Random-effects meta-analyse
Research library, full list
201 to 225 of 1,483Psychological predictors of physical activity in the diabetes prevention program.
Objective: To identify the baseline psychological variables before receiving a Diabetes Prevention Program (DPP) lifestyle intervention that predict physical activity levels (PALs) at baseline, 1 year, and end of study (2 to 3 years after randomization).
Design and subjects: Of the final 293 DPP lifestyle participants randomized, 274 (94%) completed validated questionnaires at baseline assessing stage of change for PAL, exercise self-efficacy, perceived stress, depression, and anxiety.
Statistical analyses performed: Correlations and stepwise multiple regression analyses.
Results: At baseline, this subset was similar to the entire DPP lifestyle cohort: mean age was 52.5 years, 65% were women, and mean PAL was 15.7 metabolic equivalent hours per week. Higher levels of baseline leisure PAL correlated with greater readiness to change PAL (r=0.44, P<0.0001), higher exercise self-efficacy (r=…
matched on Motivation (mesh)
Petry NM, Peirce JM, Stitzer ML, Blaine J, Roll JM, Cohen A, Obert J, Killeen T, Saladin ME, Cowell M, Kirby KC, Sterling R, Royer-Malvestuto C, Hamilton J, Booth RE, Macdonald M, Liebert M, Rader L, Burns R, DiMaria J, Copersino M, Stabile PQ, Kolodner K, Li R (2005)randomised controlled trialMEDLINE-indexed journal, not yet read by usArchives of general psychiatry289 citations Effect of prize-based incentives on outcomes in stimulant abusers in outpatient psychosocial treatment programs: a national drug abuse treatment clinical trials network study.
Context: Contingency management interventions that provide tangible incentives based on objective indicators of drug abstinence are efficacious in improving outcomes in substance abusers, but these treatments have rarely been implemented in community-based settings.
Objective: To evaluate the efficacy of an abstinence-based contingency management intervention as an addition to usual care in community treatment settings.
Design: Random assignment to usual care or usual care plus abstinence-based incentives for 12 weeks.
Setting: Eight community-based outpatient psychosocial drug abuse treatment programs.
Participants: A total of 415 cocaine or methamphetamine users beginning outpatient substance abuse treatment.
Intervention: All participants received standard care, and those assigned to the abstinence-based incentive condition also earned chances to win prizes for submitting substance-fr…
matched on Motivation (mesh)
Luo SX, Huang EJ (2016)reviewMEDLINE-indexed journal, not yet read by usThe American journal of pathology109 citations Dopaminergic Neurons and Brain Reward Pathways: From Neurogenesis to Circuit Assembly.
Midbrain dopaminergic (DA) neurons in the substantia nigra pars compacta and ventral tegmental area regulate extrapyramidal movement and important cognitive functions, including motivation, reward associations, and habit learning. Dysfunctions in DA neuron circuitry have been implicated in several neuropsychiatric disorders, including addiction and schizophrenia, whereas selective degeneration of DA neurons in substantia nigra pars compacta is a key neuropathological feature in Parkinson disease. Efforts to understand these disorders have focused on dissecting the underlying causes, as well as developing therapeutic strategies to replenish dopamine deficiency. In particular, the promise of cell replacement therapies for clinical intervention has led to extensive research in the identification of mechanisms involved in DA neuron development. It is hoped that a comprehensive understanding …
matched on Motivation (mesh), Reward (mesh), Ventral Tegmental Area (mesh)
MDMA-induced indifference to negative sounds is mediated by the 5-HT2A receptor.
Background: MDMA has been shown to induce feelings of sociability, a positive emotional bias and enhanced empathy. While previous research has used only visual emotional stimuli, communication entails more than that single dimension and it is known that auditory information is also crucial in this process. In addition, it is, however, unclear what the neurobiological mechanism underlying these MDMA effects on social behaviour is. Previously, studies have shown that MDMA-induced emotional excitability and positive mood are linked to the action on the serotonin (5-HT) 2A receptor.
Aim: The present study aimed at investigating the effect of MDMA on processing of sounds (Processing of Affective Sounds Task (PAST)) and cognitive biases (Approach-Avoidance Task (AAT)) towards emotional and social stimuli and the role of 5-HT2A receptor in these effects.
Methods: Twenty healthy recreational use…
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Music and Dementia: Individual Differences in Response to Personalized Playlists.
Personalized music playlists are increasingly being used in health-care contexts to address the psychological and behavioral symptoms in people with dementia. However, there is little understanding of how people with different mental health histories and symptoms respond differently to music. A factorial experiment was conducted to investigate the influence of depression, anxiety, apathy, and cognitive decline on affective response to music. Ninety-nine people with dementia listened to three music playlists based on personal preferences. Activation of facial action units was measured, and behavioural responses continuously observed. Results demonstrated that people with high levels of depression and with symptoms of Alzheimer's type dementia demonstrated increased levels of sadness when listening to music. People with low depression but high levels of apathy demonstrated the highest beha…
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Adaptive crossover designs for assessment of symptomatic treatments targeting behaviour in neurodegenerative disease: a phase 2 clinical trial of intranasal oxytocin for frontotemporal dementia (FOXY).
Background: There are currently no treatments for empathy deficits in neuropsychiatric disorders. Acute administration of the hormone oxytocin has been associated with symptomatic improvements across animal models and several neuropsychiatric disorders, but results of the majority of oxytocin randomised controlled trials (RCTs) of longer duration have been negative or inconclusive. This lack of efficacy of may be due to rapid habituation to oxytocin with chronic dosing. The objective of the present study is to describe the design of a phase 2 adaptive randomised controlled crossover trial of intranasal oxytocin in frontotemporal dementia (FOXY) as an efficient model for future investigations of symptomatic treatments in neuropsychiatric and neurodegenerative disorders.
Methods: Stage 1 will identify which of three dose schedules is most promising based on change in the primary outcome me…
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Attentional bias is more predictive of eating behavior after self-control exertion.
There is experimental evidence to suggest that attentional bias to food stimuli may predict food intake. The process model of ego-depletion (Inzlicht & Schmeichel, 2012) proposes that after self-control exertion, attention shifts toward rewarding objects such as palatable food, which in turn should prompt greater food consumption as an indicator of lower self-control. In the current study, 84 female restrained and unrestrained eaters engaged in a self-control or neutral task, followed by a measure of attentional bias and an eating task. Results indicated there were no differences in attentional bias or amount eaten between self-control conditions and dietary restraint groups. However, a moderated regression showed that attentional bias toward food or self-control images predicted eating behavior only in participants who previously exerted self-control, while no effect was found for parti…
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The effects of screen media content on young children's executive functioning.
Children's exposure to screen-based media has raised concerns for many reasons. One reason is that viewing particular television content has been shown to negatively affect children's executive functioning. Yet, it is unclear whether interacting with a touchscreen device affects executive functioning in the same way as the television research suggests. In the current study, 96 2- and 3-year-old children completed executive functioning measures of working memory and response inhibition and task switching before and after a brief screen intervention consisting of watching an educational television show, playing an educational app, or watching a cartoon. Children's ability to delay gratification was also assessed. Results indicate that the type of screen intervention had a significant effect on executive functioning performance. Children were more likely to delay gratification after playing…
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Dopamine D2/3- and μ-opioid receptor antagonists reduce cue-induced responding and reward impulsivity in humans.
Increased responding to drug-associated stimuli (cue reactivity) and an inability to tolerate delayed gratification (reward impulsivity) have been implicated in the development and maintenance of drug addiction. Whereas data from animal studies suggest that both the dopamine and opioid system are involved in these two reward-related processes, their role in humans is less clear. Moreover, dopaminergic and opioidergic drugs have not been directly compared with regard to these functions, even though a deeper understanding of the underlying mechanisms might inform the development of specific treatments for elevated cue reactivity and reward impulsivity. In a randomized, double-blind, between-subject design we administered the selective dopamine D2/D3 receptor antagonist amisulpride (400 mg, n=41), the unspecific opioid receptor antagonist naltrexone (50 mg, n=40) or placebo (n=40) to health…
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Sandøy IF, Mudenda M, Zulu J, Munsaka E, Blystad A, Makasa MC, Mæstad O, Tungodden B, Jacobs C, Kampata L, Fylkesnes K, Svanemyr J, Moland KM, Banda R, Musonda P (2016)randomised controlled trialMEDLINE-indexed journal, not yet read by usTrials31 citations Effectiveness of a girls' empowerment programme on early childbearing, marriage and school dropout among adolescent girls in rural Zambia: study protocol for a cluster randomized trial.
Background: Adolescent pregnancies pose a risk to the young mothers and their babies. In Zambia, 35% of young girls in rural areas have given birth by the age of 18 years. Pregnancy rates are particularly high among out-of-school girls. Poverty, low enrolment in secondary school, myths and community norms all contribute to early childbearing. This protocol describes a trial aiming to measure the effect on early childbearing rates in a rural Zambian context of (1) economic support to girls and their families, and (2) combining economic support with a community intervention to enhance knowledge about sexual and reproductive health and supportive community norms.
Methods/design: This cluster randomized controlled trial (CRCT) will have three arms. The clusters are rural schools with surrounding communities. Approximately 4900 girls in grade 7 in 2016 will be recruited from 157 schools in 12…
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Masaki C, Sharpley AL, Cooper CM, Godlewska BR, Singh N, Vasudevan SR, Harmer CJ, Churchill GC, Sharp T, Rogers RD, Cowen PJ (2016)randomised controlled trialMEDLINE-indexed journal, not yet read by usPsychopharmacology59 citations Effects of the potential lithium-mimetic, ebselen, on impulsivity and emotional processing.
Rationale: Lithium remains the most effective treatment for bipolar disorder and also has important effects to lower suicidal behaviour, a property that may be linked to its ability to diminish impulsive, aggressive behaviour. The antioxidant drug, ebselen, has been proposed as a possible lithium-mimetic based on its ability in animals to inhibit inositol monophosphatase (IMPase), an action which it shares with lithium.
Objectives: The aim of the study was to determine whether treatment with ebselen altered emotional processing and diminished measures of risk-taking behaviour.
Methods: We studied 20 healthy participants who were tested on two occasions receiving either ebselen (3600 mg over 24 h) or identical placebo in a double-blind, randomized, cross-over design. Three hours after the final dose of ebselen/placebo, participants completed the Cambridge Gambling Task (CGT) and a task th…
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Can the attention training technique turn one marshmallow into two? Improving children's ability to delay gratification.
The seminal Marshmallow Test (Mischel & Ebbesen, 1970) has reliably demonstrated that children who can delay gratification are more likely to be emotionally stable and successful later in life. However, this is not good news for those children who can't delay. Therefore, this study aimed to explore whether a metacognitive therapy technique, Attention Training (ATT: Wells, 1990) can improve young children's ability to delay gratification. One hundred children participated. Classes of 5-6 year olds were randomly allocated to either the ATT or a no-intervention condition and were tested pre and post-intervention on ability to delay gratification, verbal inhibition (executive control), and measures of mood. The ATT intervention significantly increased (2.64 times) delay of gratification compared to the no-intervention condition. After controlling for age and months in school, the ATT interve…
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Granting wishes of seriously ill children: Effects on parents' well-being.
We investigated whether a positive intervention (i.e. granting a wish) in children with a chronic illness could promote positive psychological responses in their parents. Hospitalized children were randomly assigned to either the wish group or to a waiting-list control group. Mothers and fathers' responses (N = 86 and 38, respectively) were studied. Parents from the wish group showed higher levels of positive emotions and beliefs in a benevolent world than the control group. Mothers from the wish group reported higher benefit finding, gratitude, and love than those in the control group. Given that the child's illness inevitably affects their parents, it is important to promote studies that include parents' well-being dimensions.
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Blum K, Liu Y, Wang W, Wang Y, Zhang Y, Oscar-Berman M, Smolen A, Febo M, Han D, Simpatico T, Cronjé FJ, Demetrovics Z, Gold MS (2015)randomised controlled trialMEDLINE-indexed journal, not yet read by usPostgraduate medicine87 citations rsfMRI effects of KB220Z™ on neural pathways in reward circuitry of abstinent genotyped heroin addicts.
Recently, Willuhn et al. reported that cocaine use and even non-substance-related addictive behavior increases as dopaminergic function is reduced. Chronic cocaine exposure has been associated with decreases in D2/D3 receptors and was also associated with lower activation of cues in occipital cortex and cerebellum, in a recent PET study by Volkow's et al. Therefore, treatment strategies, like dopamine agonist therapy, that might conserve dopamine function may be an interesting approach to relapse prevention in psychoactive drug and behavioral addictions. To this aim, we evaluated the effect of KB220Z™ on reward circuitry of 10 heroin addicts undergoing protracted abstinence (average 16.9 months). In a randomized placebo-controlled crossover study of KB220Z, five subjects completed a triple-blinded experiment in which the subject, the person administering the treatment, and the person eva…
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Effect of a high-intensity exercise program on physical function and mental health in nursing home residents with dementia: an assessor blinded randomized controlled trial.
Background: Dementia is among the leading causes of functional loss and disability in older adults. Research has demonstrated that nursing home patients without dementia can improve their function in activities of daily living, strength, balance and mental well being by physical exercise. The evidence on effect of physical exercise among nursing home patients with dementia is scarce and ambiguous. Thus, the primary objective of this study was to investigate the effect of a high intensity functional exercise program on the performance of balance in nursing home residents with dementia. The secondary objective was to examine the effect of this exercise on muscle strength, mobility, activities of daily living, quality of life and neuropsychiatric symptoms.
Design and methods: This single blinded randomized controlled trial was conducted among 170 persons with dementia living in nursing home…
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Devos D, Moreau C, Maltête D, Lefaucheur R, Kreisler A, Eusebio A, Defer G, Ouk T, Azulay JP, Krystkowiak P, Witjas T, Delliaux M, Destée A, Duhamel A, Bordet R, Defebvre L, Dujardin K (2014)randomised controlled trialMEDLINE-indexed journal, not yet read by usJournal of neurology, neurosurgery, and psychiatry111 citations Rivastigmine in apathetic but dementia and depression-free patients with Parkinson's disease: a double-blind, placebo-controlled, randomised clinical trial.
Background: Even with optimal dopaminergic treatments, many patients with Parkinson's disease (PD) are frequently incapacitated by apathy prior to the development of dementia. We sought to establish whether rivastigmine's ability to inhibit acetyl- and butyrylcholinesterases could relieve the symptoms of apathy in dementia-free, non-depressed patients with advanced PD.
Methods: We performed a multicentre, parallel, double-blind, placebo-controlled, randomised clinical trial (Protocol ID: 2008-002578-36; clinicaltrials.gov reference: NCT00767091) in patients with PD with moderate to severe apathy (despite optimised dopaminergic treatment) and without dementia. Patients from five French university hospitals were randomly assigned 1:1 to rivastigmine (transdermal patch of 9.5 mg/day) or placebo for 6 months. The primary efficacy criterion was the change over time in the Lille Apathy Rating …
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Altered neural correlates of reward and loss processing during simulated slot-machine fMRI in pathological gambling and cocaine dependence.
Background: Individuals with gambling or substance-use disorders exhibit similar functional alterations in reward circuitry suggestive of a shared underlying vulnerability in addictive disorders. Additional research into common and unique alterations in reward-processing in substance-related and non-substance-related addictions may identify neural factors that could be targeted in treatment development for these disorders.
Methods: To investigate contextual reward-processing in pathological gambling, a slot-machine fMRI task was performed by three groups (with pathological gambling, cocaine dependence and neither disorder; N = 24 each) to determine the extent to which two groups with addictions (non-substance-related and substance-related) showed similarities and differences with respect to each other and a non-addicted group during anticipatory periods and following the delivery of winn…
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Differential, but not opponent, effects of L -DOPA and citalopram on action learning with reward and punishment.
Rationale: Decision-making involves two fundamental axes of control namely valence, spanning reward and punishment, and action, spanning invigoration and inhibition. We recently exploited a go/no-go task whose contingencies explicitly decouple valence and action to show that these axes are inextricably coupled during learning. This results in a disadvantage in learning to go to avoid punishment and in learning to no-go to obtain a reward. The neuromodulators dopamine and serotonin are likely to play a role in these asymmetries: Dopamine signals anticipation of future rewards and is also involved in an invigoration of motor responses leading to reward, but it also arbitrates between different forms of control. Conversely, serotonin is implicated in motor inhibition and punishment processing.
Objective: To investigate the role of dopamine and serotonin in the interaction between action and…
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Opposing neural effects of naltrexone on food reward and aversion: implications for the treatment of obesity.
Rationale: Opioid antagonism reduces the consumption of palatable foods in humans but the neural substrates implicated in these effects are less well understood.
Objectives: The aim of the present study was to examine the effects of the opioid antagonist, naltrexone, on neural response to rewarding and aversive sight and taste stimuli.
Methods: We used functional magnetic resonance imaging (fMRI) to examine the neural responses to the sight and taste of pleasant (chocolate) and aversive (mouldy strawberry) stimuli in 20 healthy volunteers who received a single oral dose of naltrexone (50 mg) and placebo in a double-blind, repeated-measures cross-over, design.
Results: Relative to placebo, naltrexone decreased reward activation to chocolate in the dorsal anterior cingulate cortex and caudate, and increased aversive-related activation to unpleasant strawberry in the amygdala and anterior i…
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The effect of friendly touch on delay-of-gratification in preschool children.
Physical touch has many documented benefits, but past research has paid little attention to the effects of touch on children's development. Here, we tested the effect of touch on children's compliance behaviour in a modified delay-of-gratification task. Forty children (M = 59 months) were randomly assigned to a touch or no touch group. Children in the intervention condition received a friendly touch on the back while being told that they should wait for permission to eat a candy. Results showed that children in the touch condition waited an average of two minutes longer to eat the candy than children in the no touch condition. This finding has implications for the potential of using touch to promote positive behaviours in children.
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Clark-Elford R, Nathan PJ, Auyeung B, Voon V, Sule A, Müller U, Dudas R, Sahakian BJ, Phan KL, Baron-Cohen S (2014)randomised controlled trialMEDLINE-indexed journal, not yet read by usThe international journal of neuropsychopharmacology23 citations The effects of oxytocin on social reward learning in humans.
It has been hypothesised that the mechanisms modulating social affiliation are regulated by reward circuitry. Oxytocin, previously shown to support affiliative behaviour and the processing of socio-emotional stimuli, is expressed in areas of the brain involved in reward and motivation. However, limited data are available that test if oxytocin is directly involved in reward learning, or whether oxytocin can modulate the effect of emotion on reward learning. In a double-blind, randomised, placebo-controlled, within-group study design, 24 typical male volunteers were administered 24 IU of oxytocin or placebo and subsequently completed an affective reward learning task. Oxytocin selectively reduced performance of learning rewards, but not losses, from happy faces. The mechanism by which oxytocin may be exerting this effect is discussed in terms of whether oxytocin is affecting identity recog…
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Rudorf S, Hare TA (2014)randomised controlled trialMEDLINE-indexed journal, not yet read by usThe Journal of neuroscience : the official journal of the Society for Neuroscience96 citations Interactions between dorsolateral and ventromedial prefrontal cortex underlie context-dependent stimulus valuation in goal-directed choice.
External circumstances and internal bodily states often change and require organisms to flexibly adapt valuation processes to select the optimal action in a given context. Here, we investigate the neurobiology of context-dependent valuation in 22 human subjects using functional magnetic resonance imaging. Subjects made binary choices between visual stimuli with three attributes (shape, color, and pattern) that were associated with monetary values. Context changes required subjects to deviate from the default shape valuation and to integrate a second attribute to comply with the goal to maximize rewards. Critically, this binary choice task did not involve any conflict between opposing monetary, temporal, or social preferences. We tested the hypothesis that interactions between regions of dorsolateral prefrontal cortex (dlPFC) and ventromedial prefrontal cortex (vmPFC) implicated in self-c…
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Dopamine restores reward prediction errors in old age.
Senescence affects the ability to utilize information about the likelihood of rewards for optimal decision-making. Using functional magnetic resonance imaging in humans, we found that healthy older adults had an abnormal signature of expected value, resulting in an incomplete reward prediction error (RPE) signal in the nucleus accumbens, a brain region that receives rich input projections from substantia nigra/ventral tegmental area (SN/VTA) dopaminergic neurons. Structural connectivity between SN/VTA and striatum, measured by diffusion tensor imaging, was tightly coupled to inter-individual differences in the expression of this expected reward value signal. The dopamine precursor levodopa (L-DOPA) increased the task-based learning rate and task performance in some older adults to the level of young adults. This drug effect was linked to restoration of a canonical neural RPE. Our results…
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Monetary reward processing in obese individuals with and without binge eating disorder.
Background: An important step in obesity research involves identifying neurobiological underpinnings of nonfood reward processing unique to specific subgroups of obese individuals.
Methods: Nineteen obese individuals seeking treatment for binge eating disorder (BED) were compared with 19 non-BED obese individuals (OB) and 19 lean control subjects (LC) while performing a monetary reward/loss task that parses anticipatory and outcome components during functional magnetic resonance imaging. Differences in regional activation were investigated in BED, OB, and LC groups during reward/loss prospect, anticipation, and notification.
Results: Relative to the LC group, the OB group demonstrated increased ventral striatal and ventromedial prefrontal cortex activity during anticipatory phases. In contrast, the BED group relative to the OB group demonstrated diminished bilateral ventral striatal acti…
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Stress management interventions in the workplace improve stress reactivity: a randomised controlled trial.
Objective: To examine the long-term effects of a stress management intervention (SMI) based on the effort-reward imbalance (ERI) model, on psychological and biological reactions to work stress.
Methods: 174 lower or middle management employees (99% male) were randomly assigned to an intervention or a waiting control group. The programme comprised 24 × 45 min group sessions (2 full days followed by two 4 × 45 min sessions within the next 8 months) on individual work stress situations. The primary endpoint was perceived stress reactivity (Stress Reactivity Scale, SRS), while secondary endpoints were salivary cortisol and α-amylase, anxiety and depression, and ERI. Assessments were repeated in 154 participants 1 year later.
Results: SRS score decreased in both groups. A two-factor ANOVA with repeated measures showed a significant time × group effect (F=5.932; p=0.016) with the greater reduc…
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