Expectation of having consumed caffeine can improve performance and mood

Article

Dawkins, L., Shahzad, Fatima-Zahra, Ahmed, Suada S. and Edmonds, C. 2011. Expectation of having consumed caffeine can improve performance and mood. Appetite. 57 (3), pp. 597-600.
AuthorsDawkins, L., Shahzad, Fatima-Zahra, Ahmed, Suada S. and Edmonds, C.
Abstract

We explored whether caffeine, and expectation of having consumed caffeine, affects attention, reward responsivity and mood using double-blinded methodology. 88 participants were randomly allocated to ‘drink-type’ (caffeinated/decaffeinated coffee) and ‘expectancy’ (told caffeinated/told decaffeinated coffee) manipulations. Both caffeine and expectation of having consumed caffeine improved attention and psychomotor speed. Expectation enhanced self-reported vigour and reward responsivity. Self-reported depression increased at post-drink for all participants, but less in those receiving or expecting caffeine. These results suggest caffeine expectation can affect mood and performance but do not support a synergistic effect.

Keywordscaffeine; mood; expectancy; performance
JournalAppetite
Journal citation57 (3), pp. 597-600
Year2011
Accepted author manuscript
License
CC BY-ND
Web address (URL)http://hdl.handle.net/10552/1347
Publication dates
Print29 Jul 2011
Publication process dates
Deposited18 Nov 2011
Additional information

Citation:
Dawkins, L., Shahzad, F.-Z., Ahmed, S. S. and Edmonds, C. J. (2011) 'Expectation of having consumed caffeine can improve performance and mood'. Appetite, 57(3), pp. 597-600..

Permalink -

https://repository.uel.ac.uk/item/8608z

Log in to edit

Download files

Accepted author manuscript
Dawkins_2011b.pdf.pdf
License: CC BY-ND

  • 364
    total views
  • 829
    total downloads
  • 0
    views this month
  • 0
    downloads this month

Export as

Related outputs

Attending 12 weekly sessions of Forest School sessions improves mood and cooperation in 7-8 year old children
Hepworth, A., Haddad, H. and Edmonds, C. 2024. Attending 12 weekly sessions of Forest School sessions improves mood and cooperation in 7-8 year old children. Journal of Adventure Education and Outdoor Learning. In Press.
Water Consumption Increases Handwriting Speed and Volume Consumed Relates to Increased Finger‑tapping Speed in Schoolchildren
Booth, P., Hunyadvari, N., Dawkins, L., Moore, D., Gentile‑Rapinett, G. and Edmonds, C. J. 2022. Water Consumption Increases Handwriting Speed and Volume Consumed Relates to Increased Finger‑tapping Speed in Schoolchildren. Journal of Cognitive Enhancement. 6, pp. 183-191. https://doi.org/10.1007/s41465-021-00232-5
Neonatal Hypoxic-Ischaemic Encephalopathy: Motor Impairment beyond Cerebral Palsy
Erdi-Krausz, G., Rocha, R., Brown, A., Myneni, A., Lennartsson, F., Romsauerova, A., Cianfaglione, R., Edmonds, C. and Vollmer, B. 2021. Neonatal Hypoxic-Ischaemic Encephalopathy: Motor Impairment beyond Cerebral Palsy. European Journal of Paediatric Neurology. 35, pp. 74-81. https://doi.org/10.1016/j.ejpn.2021.10.005
Drinking Water Enhances Cognitive Performance: Positive Effects on Working Memory but Not Long-Term Memory
Edmonds, C., Beeley, J., Rizzo, I., Booth, P. and Gardner, M. 2021. Drinking Water Enhances Cognitive Performance: Positive Effects on Working Memory but Not Long-Term Memory. Journal of Cognitive Enhancement. 6, p. 67–73. https://doi.org/10.1007/s41465-021-00225-4
Children with neonatal Hypoxic Ischemic Encephalopathy (HIE) treated with therapeutic hypothermia are not as school ready as their peers
Edmonds, C. J., Cianfaglione, R., Cornforth, C. and Vollmer, B. 2021. Children with neonatal Hypoxic Ischemic Encephalopathy (HIE) treated with therapeutic hypothermia are not as school ready as their peers. Acta Paediatrica. 110 (10), pp. 2756-2765. https://doi.org/10.1111/apa.16002
Dehydration in older people: a systematic review of the effects of dehydration on health outcomes, healthcare costs and cognitive performance
Edmonds, C., Foglia, E., Booth, P., Fu, C. and Gardner, M. 2021. Dehydration in older people: a systematic review of the effects of dehydration on health outcomes, healthcare costs and cognitive performance. Archives of Gerontology and Geriatrics. 95 (Art. 104380). https://doi.org/10.1016/j.archger.2021.104380
Taking Class Notes by Hand Compared to Typing: Effects on Children’s Recall and Understanding
Horbury, S. R. and Edmonds, C. 2020. Taking Class Notes by Hand Compared to Typing: Effects on Children’s Recall and Understanding. Journal of Research in Childhood Education. 35 (1), pp. 55-67. https://doi.org/10.1080/02568543.2020.1781307
Minor neurological signs and behavioural function at age 2 years in neonatal hypoxic ischaemic encephalopathy (HIE)
Edmonds, C., Helps, A., Hart, D., Zatorska, A. M., Gupta, N., Cianfaglione, R. and Vollmer, B. 2020. Minor neurological signs and behavioural function at age 2 years in neonatal hypoxic ischaemic encephalopathy (HIE). European Journal of Paediatric Neurology. 27, pp. 78-85. https://doi.org/10.1016/j.ejpn.2020.04.003
The impact of water consumption on hydration and cognition among schoolchildren: Methods and results from a crossover trial in rural Mali
Chard, A, Trinies, V, Edmonds, C., Soggore, A and Freeman, MC 2019. The impact of water consumption on hydration and cognition among schoolchildren: Methods and results from a crossover trial in rural Mali. PLoS ONE. 14 (1), p. e0210568. https://doi.org/10.1371/journal.pone.0210568
At what stage in the drinking process does drinking water affect attention and memory? Effects of mouth rinsing and mouth drying in adults
Edmonds, C., Skeete, J., Klamerus, E. and Gardner, M. 2019. At what stage in the drinking process does drinking water affect attention and memory? Effects of mouth rinsing and mouth drying in adults. Psychological Research. 85, p. 214–222. https://doi.org/10.1007/s00426-019-01229-8
School Age Neurological and Cognitive Outcomes of Fetal Growth Retardation or Small for Gestational Age Birth Weight
Vollmer, Brigitte and Edmonds, C. 2019. School Age Neurological and Cognitive Outcomes of Fetal Growth Retardation or Small for Gestational Age Birth Weight. Frontiers in Endocrinology. 10, p. Art. 186. https://doi.org/10.3389/fendo.2019.00186
How does drinking water affect attention and memory? The effect of mouth rinsing and mouth drying on children's performance
Edmonds, C., Harte, Naomi and Gardner, Mark 2018. How does drinking water affect attention and memory? The effect of mouth rinsing and mouth drying on children's performance. Physiology & Behavior. 194, pp. 233-238. https://doi.org/10.1016/j.physbeh.2018.06.004
Implicit Mentalising during Level-1 Visual Perspective-Taking Indicated by Dissociation with Attention Orienting
Gardner, M.R., Beleviciute, A.P. and Edmonds, C. 2018. Implicit Mentalising during Level-1 Visual Perspective-Taking Indicated by Dissociation with Attention Orienting. Vision. 2 (3). https://doi.org/10.3390/vision2010003
Self-titration by experienced e-cigarette users: blood nicotine delivery and subjective effects (Study Data)
Dawkins, L., Kimber, C., Doig, Mira, Feyerabend, Colin and Corcoran, O. 2018. Self-titration by experienced e-cigarette users: blood nicotine delivery and subjective effects (Study Data). The University of East London. https://doi.org/10.15123/DATA.00000223
'Spontaneous' visual perspective-taking mediated by attention orienting that is voluntary and not reflexive
Gardner, Mark R., Hull, Zainabb, Taylor, Donna and Edmonds, C. 2018. 'Spontaneous' visual perspective-taking mediated by attention orienting that is voluntary and not reflexive. Quarterly Journal of Experimental Psychology. 71 (4), pp. 1020-1029. https://doi.org/10.1080/17470218.2017.1307868
Dose-Response Effects of Water Supplementation on Cognitive Performance and Mood in Children and Adults
Edmonds, C., Crosbie, Laura, Fatima, Fareeha, Hussain, Maryam, Jacob, Nicole and Gardner, Mark 2016. Dose-Response Effects of Water Supplementation on Cognitive Performance and Mood in Children and Adults. Appetite. 108, pp. 464-470. https://doi.org/10.1016/j.appet.2016.11.011
The effect of carbohydrate mouth rinsing on fencing performance and cognitive function following fatigue-inducing fencing
Rowlatt, G., Bottoms, Lindsay, Edmonds, C. and Buscombe, R. 2016. The effect of carbohydrate mouth rinsing on fencing performance and cognitive function following fatigue-inducing fencing. European Journal Of Sport Science. 17 (4), pp. 433-440. https://doi.org/10.1080/17461391.2016.1251497
Observed bodies generate object-based spatial codes
Taylor, Alison, Flynn, Maria, Edmonds, C. and Gardner, Mark R. 2016. Observed bodies generate object-based spatial codes. Acta Psychologica. 169 (Sep.), pp. 71-78. https://doi.org/10.1016/j.actpsy.2016.05.009
The effect of carbohydrate mouth rinsing on fencing performance and cognitive function following a fatigue inducing simulated bout of fencing in national level foil fencers
Bottoms, L., Rowlatt, Georgina, Edmonds, C. and Buscombe, R. 2016. The effect of carbohydrate mouth rinsing on fencing performance and cognitive function following a fatigue inducing simulated bout of fencing in national level foil fencers. Biomedical Basis of Elite Performance 2016. Nottingham, UK 06 - 08 Mar 2016
The effect of carbohydrate mouth rinse on a 30-minute arm cranking performance
Andersson, H., Sinclair, J., Knight, A., Buscombe, R., Edmonds, C. and Bottoms, L. 2016. The effect of carbohydrate mouth rinse on a 30-minute arm cranking performance. Comparative Exercise Physiology. 12 (1), pp. 41-47. https://doi.org/10.3920/CEP150032
Alcohol gel ingestion amongst homeless Eastern and Central Europeans in London: assessing the effects on cognitive functioning and psychological health
Soar, K., Papaioannou, G. and Dawkins, L. 2016. Alcohol gel ingestion amongst homeless Eastern and Central Europeans in London: assessing the effects on cognitive functioning and psychological health. Substance Use & Misuse. 51 (10), pp. 1274-1282. https://doi.org/10.3109/10826084.2016.1168441
The Effects of E-Cigarette Visual Appearance on Craving and Withdrawal Symptoms in Abstinent Smokers
Dawkins, L., Munafo, Marcus, Christoforou, Gina, Olumegbon, Naomi and Soar, Kirstie 2015. The Effects of E-Cigarette Visual Appearance on Craving and Withdrawal Symptoms in Abstinent Smokers. Psychology of Addictive Behaviours. 30 (1), pp. 101-105. https://doi.org/10.1037/adb0000112
Acute electronic cigarette use: nicotine delivery and subjective effects in regular users
Dawkins, L. and Corcoran, O. 2014. Acute electronic cigarette use: nicotine delivery and subjective effects in regular users. Psychopharmacology. 231 (2), pp. 401-407. https://doi.org/10.1007/s00213-013-3249-8
First versus second generation electronic cigarettes: predictors of choice and effects on urge to smoke and withdrawal symptoms
Dawkins, L., Kimber, Catherine, Panwanesarasa, Yasothani and Soar, K. 2014. First versus second generation electronic cigarettes: predictors of choice and effects on urge to smoke and withdrawal symptoms. Addiction. 110 (4), pp. 669-677.
Subjective thirst moderates changes in speed of responding associated with water consumption
Edmonds, C., Crombie, Rosanna and Gardner, Mark R. 2013. Subjective thirst moderates changes in speed of responding associated with water consumption. Frontiers in Human Neuroscience. 7, p. Art363.
Strategy modulates spatial perspective-taking: evidence for dissociable disembodied and embodied routes
Gardner, Mark R, Brazier, Mark, Edmonds, C. and Gronholm, Petra C. 2013. Strategy modulates spatial perspective-taking: evidence for dissociable disembodied and embodied routes. Frontiers in Human Neuroscience. 7, p. Art457.
Vaping’ profiles and preferences: an online survey of electronic cigarette users
Dawkins, L. 2013. Vaping’ profiles and preferences: an online survey of electronic cigarette users. UEL Research and Knowledge Exchange Conference 2013. University of East London, London 26 Jun 2013 London University of East London.
‘Vaping’ profiles and preferences: an online survey of electronic cigarette users
Dawkins, L., Turner, J., Roberts, A. and Soar, K. 2013. ‘Vaping’ profiles and preferences: an online survey of electronic cigarette users. Addiction. 108 (6), pp. 1115-1125. https://doi.org/10.1111/add.12150
Nicotine derived from the electronic cigarette improves time-based prospective memory in abstinent smokers
Dawkins, L., Turner, J. and Crowe, Eadaoin 2013. Nicotine derived from the electronic cigarette improves time-based prospective memory in abstinent smokers. Psychopharmacology. 227 (3), pp. 377-384. https://doi.org/10.1007/s00213-013-2983-2
Investigating the impact of nicotine on executive functions using a novel virtual reality assessment
Jansari, A., Froggatt, Daniel, Edginton, Trudi and Dawkins, L. 2012. Investigating the impact of nicotine on executive functions using a novel virtual reality assessment. Addiction. 108 (5), pp. 977-984.
Water consumption, not expectancies about water consumption, affects cognitive performance in adults
Edmonds, C., Crombie, Rosanna, Baillieux, Haiko, Gardner, Mark R and Dawkins, L. 2013. Water consumption, not expectancies about water consumption, affects cognitive performance in adults. Appetite. 60, pp. 148-153.
Relapse to smoking during unaided cessation: clinical, cognitive, and motivational predictors
Powell, Jane H, Dawkins, L., West, Robert, Powell, John F and Pickering, Alan 2010. Relapse to smoking during unaided cessation: clinical, cognitive, and motivational predictors. Psychopharmacology. 212 (4), pp. 537-549.
The electronic-cigarette: effects on desire to smoke, withdrawal symptoms and cognition
Dawkins, L., Turner, J., Hasna, Surrayyah and Soar, K. 2012. The electronic-cigarette: effects on desire to smoke, withdrawal symptoms and cognition. Addictive Behaviors. 37 (8), pp. 970-973.
Neuropsychological effects associated with recreational cocaine use
Soar, K., Mason, Colette, Potton, A. and Dawkins, L. 2012. Neuropsychological effects associated with recreational cocaine use. Psychopharmacology. 222 (4), pp. 633-643.
The effects of cigarette smoking and abstinence on auditory verbal learning
Soar, K., Dawkins, L., Begum, H. and Parrott, A.C. 2008. The effects of cigarette smoking and abstinence on auditory verbal learning. Human Psychopharmacology: Clinical and Experimental. 23 (7), pp. 621-627.
Effects of nicotine and alcohol on affective responses to emotionally toned film clips
Dawkins, L. and Powell, J. 2011. Effects of nicotine and alcohol on affective responses to emotionally toned film clips. Psychopharmacology. 216 (2), pp. 197-205.
The effect of intra-uterine growth on Verbal IQ scores in childhood: a monozygotic twin study
Edmonds, C., Isaacs, Elizabeth B., Cole, Tim J., Haslinger Rogers, Mary, Lanigan, Julie, Singhal, Atul, Birbara, Toni, Gringras, Paul and Denton, Jane 2010. The effect of intra-uterine growth on Verbal IQ scores in childhood: a monozygotic twin study. Pediatrics. 126 (5), pp. e1095-e1101.
Smoking, reward responsiveness, and response inhibition: tests of an incentive motivational model
Powell, Jane H., Dawkins, L. and Davis, Robert E. 2002. Smoking, reward responsiveness, and response inhibition: tests of an incentive motivational model. Biological Psychiatry. 51 (2), pp. 151-163.
Cognitive and psychological correlates of smoking abstinence, and predictors of successful cessation
Powell, Jane H., Pickering, Alan D., Dawkins, L., West, Robert and Powell, John F. 2004. Cognitive and psychological correlates of smoking abstinence, and predictors of successful cessation. Addictive Behaviors. 29 (7), pp. 1407-1426.
Patterns of change in withdrawal symptoms, desire to smoke, reward motivation and response inhibition across 3 months of smoking abstinence
Dawkins, L., Powell, Jane H., Pickering, Alan, Powell, John and West, Robert 2009. Patterns of change in withdrawal symptoms, desire to smoke, reward motivation and response inhibition across 3 months of smoking abstinence. Addiction. 104 (5), pp. 850-858.
A double-blind placebo controlled experimental study of nicotine: I - Effects on incentive motivation
Dawkins, L., Powell, Jane H., West, Robert, Powell, John and Pickering, Alan 2006. A double-blind placebo controlled experimental study of nicotine: I - Effects on incentive motivation. Psychopharmacology. 189 (3), pp. 355-367.
The effects of smoking and abstinence on experience of happiness and sadness in response to positively valenced, negatively valenced, and neutral film clips
Dawkins, L., Acaster, Sarah and Powell, Jane H. 2007. The effects of smoking and abstinence on experience of happiness and sadness in response to positively valenced, negatively valenced, and neutral film clips. Addictive Behaviors. 32 (2), pp. 425-431.
A double-blind placebo controlled experimental study of nicotine: II - Effects on response inhibition and executive functioning
Dawkins, L., Powell, Jane H., West, Robert, Powell, John and Pickering, Alan 2007. A double-blind placebo controlled experimental study of nicotine: II - Effects on response inhibition and executive functioning. Psychopharmacology. 190 (4), pp. 457-467.
Generating inferences from written and spoken language: a comparison of children with visual impairment and children with sight
Edmonds, C. and Pring, Linda 2006. Generating inferences from written and spoken language: a comparison of children with visual impairment and children with sight. British Journal of Developmental Psychology. 24 (2), pp. 337-351.
Inspection time and cognitive abilities in twins aged 7 to 17 years: age-related changes, heritability and genetic covariance
Edmonds, C., Isaacs, Elizabeth B., Visscher, Peter M., Rogers, Mary, Lanigan, Julie, Singhal, Atul, Lucas, Alan, Gringras, Paul, Denton, Jane and Deary, Ian J. 2008. Inspection time and cognitive abilities in twins aged 7 to 17 years: age-related changes, heritability and genetic covariance. Intelligence. 36 (3), pp. 210-225.
Should children drink more water? The effects of drinking water on cognition in children
Edmonds, C. and Burford, Denise 2009. Should children drink more water? The effects of drinking water on cognition in children. Appetite. 52 (3), pp. 776-779.
Aluminum exposure from parenteral nutrition in preterm infants: bone health at 15-year follow-up
Fewtrell, Mary S., Bishop, Nick J., Edmonds, C., Isaacs, Elizabeth B. and Lucas, Alan 2009. Aluminum exposure from parenteral nutrition in preterm infants: bone health at 15-year follow-up. Pediatrics. 124 (5), pp. 1372-1379.
Does having a drink help you think? 6–7-year-old children show improvements in cognitive performance from baseline to test after having a drink of water
Edmonds, C. and Jeffes, Ben 2009. Does having a drink help you think? 6–7-year-old children show improvements in cognitive performance from baseline to test after having a drink of water. Appetite. 53 (3), pp. 469-472.