Hostname: page-component-848d4c4894-ttngx Total loading time: 0 Render date: 2024-05-16T05:42:06.736Z Has data issue: false hasContentIssue false

Optimistic bias and food

Published online by Cambridge University Press:  01 November 2007

Susan Miles*
Affiliation:
Institute of Food Research, Norwich Research Park, Colney Lane, Norwich, NR4 7UA, UK
Victoria Scaife
Affiliation:
Institute of Food Research, Norwich Research Park, Colney Lane, Norwich, NR4 7UA, UK
*
*Corresponding author: Dr Susan Miles, fax +44 1603 507723, email susan.miles@bbsrc.ac.uk
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Food consumption patterns are influenced by a number of factors, including social and cultural factors. It is difficult to effect dietary change, and one possible barrier to dietary change is optimistic bias. Research indicates that individuals tend to believe that they are less likely to experience negative events, and more likely to experience positive events than their peers; this phenomenon is known as optimistic bias. It has been argued that optimistic bias may have a negative impact both on self-protective behaviour and on efforts to promote risk-reducing behaviours. The present article reviews the literature investigating optimistic bias specifically in the food domain. The review indicated that many food and nutrition issues are associated with optimistic bias. This has important implications for health-promotion activities in the food domain. The paper also describes key aspects of the methodology used to investigate optimistic bias and details the conditions under which optimistic bias has been demonstrated. The importance of identifying the causes of optimistic bias is discussed, and empirical attempts designed to reduce optimistic bias by countering the causes are reviewed. Finally, directions for future research are suggested.

Type
Research Article
Copyright
Copyright © CABI Publishing 2003

References

Alicke, MD, Klotz, ML, Breitenbecher, DL, Yurak, TJ & Vredenburg, DS (1995) Personal contact, individuation, and the better-than-average effect. Journal of Personality and Social Psychology 68, 804825.CrossRefGoogle Scholar
Armor, DA & Taylor, SE (1998) Situated optimism: specific outcome expectancies and self-regulation. Advances in Experimental Social Psychology 30, 309379.CrossRefGoogle Scholar
Aspinwall, LG & Brunhart, SM (1996) Distinguishing optimism from denial: optimistic beliefs predict attention to health threats. Personality and Social Psychology Bulletin 22, 9931003.CrossRefGoogle Scholar
Astrom, AN, Awadia, AK & Bjorvatn, K (1999) Perceptions of susceptibility to oral health hazards: a study of women in different cultures. Community Dental Oral Epidemiology 27, 268274.CrossRefGoogle ScholarPubMed
Boney McCoy, S, Gibbons, FX, Reis, TJ, Gerrard, M, Luus, CAE & von Wald Sufka, A (1992) Perceptions of smoking risk as a function of smoking status. Journal of Behavioral Medicine 15, 469488.CrossRefGoogle Scholar
British Nutrition Foundation (1998) BNF Information: Fat. http://www.nutrition.org.ukGoogle Scholar
Burger, JM & Burns, L (1988) The illusion of unique invulnerability and the use of effective contraception. Personality and Social Psychology Bulletin 14, 264270.CrossRefGoogle ScholarPubMed
Chandler, CC, Greening, L, Robison, LJ & Stoppelbein, L (1999) It can't happen to me … Or can it? Conditional base rates affect subjective probability judgements. Journal of Experimental Psychology: Applied 5, 361378.Google Scholar
Clarke, VA, Lovegrove, H, Williams, A & Macpherson, M (2000) Unrealistic optimism and the Health Belief Model. Journal of Behavioral Medicine 23, 367376.CrossRefGoogle ScholarPubMed
Committee on Medical Aspects of Food and Nutrition Policy (1994) Nutritional Aspects of Cardiovascular Disease. Report of the Cardiovascular Review Group of the Committee on Medical Aspects of Food Policy. London: HM Stationery Office.Google Scholar
Cummings, KM, Becker, MH & Maile, MC (1980) Bringing the models together: An empirical approach to combining variables used to explain health actions. Journal of Behavioral Medicine 3, 123145.CrossRefGoogle ScholarPubMed
Davidson, K & Prkachin, K (1997) Optimism and unrealistic optimism have an interacting impact on health-promoting behaviour and knowledge changes. Personality and Social Psychology Bulletin 23, 617625.CrossRefGoogle Scholar
DeJoy, DM (1989) The optimism bias and traffic accident risk perception. Accident Analysis and Prevention 21, 333340.CrossRefGoogle ScholarPubMed
Dolinski, D, Gromski, W & Zawisza, E (1987) Unrealistic pessimism. Journal of Social Psychology 127, 511516.CrossRefGoogle Scholar
Eiser, JR & Arnold, BWA (1999) Out in the midday sun: Risk behaviour and optimistic beliefs among residents and visitors on Tenerife. Psychology and Health 14, 529544.CrossRefGoogle Scholar
Eiser, JR & Cole, N (2002) Participation in cervical screening as a function of perceived risk, barriers and need for cognitive closure. Journal of Health Psychology 7, 99105.CrossRefGoogle ScholarPubMed
Eiser, JR, Eiser, C & Pauwels, P (1993) Skin cancer: Assessing perceived and behavioural attitudes. Psychology and Health 8, 393404.CrossRefGoogle Scholar
Eiser, JR & van der Pligt, J (1988) Attitudes and Decisions. London: Routledge.Google Scholar
Fontaine, KR & Smith, S (1995) Optimistic bias in cancer risk perception: A cross-national study. Psychological Reports 77, 143146.CrossRefGoogle ScholarPubMed
Frewer, LJ, Howard, C, Hedderley, D & Shepherd, R (1998) Methodological approaches to assessing risk perceptions associated with food related hazards. Risk Analysis 18, 95102.CrossRefGoogle ScholarPubMed
Frewer, LJ, Shepherd, R & Sparks, P (1994) The interrelationship between perceived knowledge, control and risk associated with a range of food-related hazards targeted at the individual, other people and society. Journal of Food Safety 14, 1940.CrossRefGoogle Scholar
Harris, P (1996) Sufficient grounds for optimism?: The relationship between perceived controllability and optimistic bias. Journal of Social and Clinical Psychology 15, 952.CrossRefGoogle Scholar
Harris, P & Middleton, W (1994) The illusion of control and optimism about health: On being less at risk but no more in control than others. British Journal of Social Psychology 33, 369386.CrossRefGoogle ScholarPubMed
Harris, P, Middleton, W & Joiner, R (2000) The typical student as an in-group member: eliminating optimistic bias by reducing social distance. European Journal of Social Psychology 30, 235253.3.0.CO;2-G>CrossRefGoogle Scholar
Helweg-Larsen, M (1999) (The lack of) optimistic biases in response to the 1994 Northridge earthquake: The role of personal experience. Basic and Applied Social Psychology 21, 119129.CrossRefGoogle Scholar
Helweg-Larsen, M & Shepperd, JA (2001) Do moderators of the optimistic bias affect personal or target risk estimates? A review of the literature. Personality and Social Psychology Review 5, 7495.CrossRefGoogle Scholar
Hoorens, V (1995) Self-favoring biases, self-presentation, and the self-other asymmetry in social comparison. Journal of Personality 63, 793817.CrossRefGoogle Scholar
Hoorens, V & Buunk, BP (1993) Social comparison of health risks: Locus of control, the person-positivity bias, and unrealistic optimism. Journal of Applied Social Psychology 23, 291302.CrossRefGoogle Scholar
Janz, NK & Becker, MH (1984) The Health Belief Model: A decade later. Health Education Quarterly 11, 147.CrossRefGoogle ScholarPubMed
Klein, WM (1996) Maintaining self-serving social comparisons: Attenuating the perceived significance of risk-increasing behaviors. Journal of Social and Clinical Psychology 15, 120142.CrossRefGoogle Scholar
Klein, WM & Kunda, Z (1993) Maintaining self-serving social comparisons: biased reconstruction of one's past behaviors. Personality and Social Psychology Bulletin 19, 732739.CrossRefGoogle Scholar
Klein, WM & Weinstein, ND (1997) Social comparison and unrealistic optimism about personal risk. In Health, Coping and Well-Being: Perspectives from Social Comparison Theory. pp. 2561 [Buunk, BP and Gibbons, FX editors]. London: Lawrence Erlbaum Associates.Google Scholar
Kos, JM & Clarke, VA (2001) Is optimistic bias influenced by control or delay?. Health Education Research 16, 533540.CrossRefGoogle ScholarPubMed
Kulik, JA & Mahler, HI (1987) Health status, perceptions of risk, and prevention interest for health and nonhealth problems. Health Psychology 6, 1527.CrossRefGoogle ScholarPubMed
Kunda, Z (1990) The case for motivated reasoning. Psychological Bulletin 108, 480498.CrossRefGoogle ScholarPubMed
Kunda, Z (1999) Social Cognition. Cambridge: MA: MIT Press.CrossRefGoogle Scholar
Leedham, B, Meyerowitz, BE, Muirhead, J & Frist, WH (1995) Positive expectations predict health after heart transplantation. Health Psychology 14, 7479.CrossRefGoogle ScholarPubMed
Lek, Y & Bishop, GD (1995) Perceived vulnerability to illness threats: The role of disease type, risk factor perception and attributions. Psychological Health 10, 205217.CrossRefGoogle Scholar
Lowry, R, Galuska, DA, Fulton, JE, Wechsler, H, Kann, L & Collins, JL (2000) Physical activity, food choice and weight management goals and practices among US college students. American Journal of Preventative Medicine 18, 1827.CrossRefGoogle ScholarPubMed
McKenna, FP & Myers, LB (1997) Illusory self-assessments – can they be reduced?. British Journal of Psychology 88, 3951.CrossRefGoogle ScholarPubMed
Middleton, W, Harris, P & Surman, M (1996) Give ‘em enough rope: Perception of health and safety risks in bungee jumpers. Journal of Social and Clinical Psychology 15, 6879.CrossRefGoogle Scholar
Miles, SE (2001) Public perception of five food hazards: Investigating optimistic bias and perception of uncertainty information. Unpublished doctoral thesis. University of Reading.Google Scholar
Miles, S & Frewer, LJ (2001) Investigating specific concerns about different food hazards. Food Quality and Preference 12, 4761.CrossRefGoogle Scholar
Myers, LB & Brewin, CR (1996) Illusions of well-being and the repressive coping style. British Journal of Social Psychology 35, 443457.CrossRefGoogle ScholarPubMed
Otten, W & van der Pligt, J (1996) Context effects in the measurement of comparative optimism probability judgements. Journal of Social and Clinical Psychology 15, 80101.CrossRefGoogle Scholar
Paisley, CM & Sparks, P (1998) Expectations of reducing fat intake: The role of perceived need within the Theory of Planned Behaviour. Psychology and Health 13, 341353.CrossRefGoogle Scholar
Perloff, LS & Fetzer, BK (1986) Self-other judgements and perceived vulnerability to victimization. Journal of Personality and Social Psychology 50, 502510.CrossRefGoogle Scholar
Peterson, C & De Avila, ME (1995) Optimistic explanatory style and perception of health problems. Journal of Clinical Psychology 51, 128132.3.0.CO;2-1>CrossRefGoogle ScholarPubMed
Peto, J (2001) Cancer epidemiology in the last century and the next decade. Nature 411, 390395.CrossRefGoogle ScholarPubMed
Raats, M & Sparks, P (1995) Unrealistic optimism about diet-related risks: Implications for interventions. Proceedings of the Nutrition Society 54, 737745.CrossRefGoogle ScholarPubMed
Raats, M, Sparks, P, Geekie, MA & Shepherd, R (1999) The effects of providing personalized dietary feedback. A semi-computerized approach. Patient Education and Counseling 37, 177189.CrossRefGoogle ScholarPubMed
Reed, GM, Kemeny, ME, Taylor, SE, Wang, HJ & Visscher, BR (1994) Realistic acceptance as a predictor of decreased survival time in gay men with AIDS. Health Psychology 13, 299307.CrossRefGoogle ScholarPubMed
Regan, PC, Snyder, M & Kassin, SM (1995) Unrealistic optimism: Self-enhancement or person positivity?. Personality and Social Psychology Bulletin 21, 10731082.CrossRefGoogle Scholar
Rogers, RW (1975) A protection motivation theory of fear appeals and attitude change. Journal of Psychology 91, 93114.CrossRefGoogle Scholar
Rothman, AJ, Kelly, KM, Weinstein, ND & O'Leary, A (1999) Increasing the salience of risky sexual behavior: Promoting interest in HIV-antibody testing among heterosexually active young adults. Journal of Applied Social Psychology 29, 531551.CrossRefGoogle Scholar
Rothman, AJ, Klein, WM & Weinstein, ND (1996) Absolute and relative biases in estimations of personal risk. Journal of Applied Social Psychology 26, 12131236.CrossRefGoogle Scholar
Segerstrom, SC, Taylor, SE, Kemeny, ME & Fahey, JL (1998) Optimism is associated with mood, coping and immune change in response to stress. Journal of Personality and Social Psychology 74, 16461655.CrossRefGoogle ScholarPubMed
Shepherd, R (1999) Social determinants of food choice. Proceedings of the Nutrition Society 58, 807812.CrossRefGoogle ScholarPubMed
Sparks, P & Shepherd, R (1994) Public perceptions of the potential hazards associated with food production and food consumption: An empirical study. Risk Analysis 14, 799806.CrossRefGoogle ScholarPubMed
Sparks, P, Shepherd, R, Wieringa, N & Zimmermanns, N (1995) Perceived behavioural control, unrealistic optimism and dietary change: An exploratory study. Appetite 24, 243255.CrossRefGoogle ScholarPubMed
Taylor, SE & Brown, JD (1988) Illusion and well-being: A social psychological perspective on mental health. Psychological Bulletin 103, 193210.CrossRefGoogle ScholarPubMed
Taylor, SE & Brown, JD (1994) Positive illusions and well-being revisited: Separating fact from fiction. Psychological Bulletin 116, 2127.CrossRefGoogle ScholarPubMed
Taylor, SE, Kemeny, ME, Aspinwall, LG, Schneider, SG, Rodriguez, R & Herbert, M (1992) Optimism, coping, psychological distress, and high-risk sexual behavior among men at risk for acquired immunodeficiency syndrome (AIDS). Journal of Personality and Social Psychology 63, 460473.CrossRefGoogle ScholarPubMed
Tversky, A (1977) Features of similarity. Psychological Review 84, 327352.CrossRefGoogle Scholar
van der Velde, FW, Hookyaas, C & van der Pligt, J (1992) Risk perception and behavior: Pessimism, realism, and optimism about AIDS-related health behavior. Psychology and Health 6, 2338.CrossRefGoogle Scholar
Weinstein, ND (1980) Unrealistic optimism about future life events. Journal of Personality and Social Psychology 39, 806820.CrossRefGoogle Scholar
Weinstein, ND (1982) Unrealistic optimism about susceptibility to health problems. Journal of Behavioral Medicine 5, 441460.CrossRefGoogle ScholarPubMed
Weinstein, ND (1983) Reducing unrealistic optimism about illness susceptibility. Health Psychology 2, 1120.CrossRefGoogle Scholar
Weinstein, ND (1984) Why it won't happen to me: Perceptions of risk factors and susceptibility. Health Psychology 3, 431457.CrossRefGoogle ScholarPubMed
Weinstein, ND (1987) Unrealistic optimism about susceptibility to health problems; conclusions from a community-wide sample. Journal of Behavioural Medicine 10, 481499.CrossRefGoogle ScholarPubMed
Weinstein, ND (1988) The precaution adoption process. Health Psychology 7, 355386.CrossRefGoogle ScholarPubMed
Weinstein, ND (1989) Optimistic biases about personal risks. Science 246, 12321233.CrossRefGoogle ScholarPubMed
Weinstein, ND (1993) Testing four competing theories of health-protective behavior. Health Psychology 12, 324333.CrossRefGoogle ScholarPubMed
Weinstein, ND & Klein, WM (1995) Resistance of personal risk perceptions to debiasing interventions. Health Psychology 14, 132140.CrossRefGoogle ScholarPubMed
Weinstein, ND & Lachendro, E (1982) Egocentrism as a source of unrealistic optimism. Personality and Social Psychology Bulletin 8, 195200.CrossRefGoogle Scholar
Weinstein, ND & Lyon, JE (1999) Mindset, optimistic bias about personal risk and health-protective behaviour. British Journal of Health Psychology 4, 289300.CrossRefGoogle Scholar
Weinstein, ND, Lyon, JE, Rothman, AJ & Cuite, CL (2000) Changes in perceived vulnerability following natural disaster. Journal of Social and Clinical Psychology 19, 372395.CrossRefGoogle Scholar
Welkenhuysen, M, Evers-Kiebooms, G, Decruyenaere, M & van den Berghe, H (1996) Unrealistic optimism and genetic risk. Psychology and Health 11, 479492.CrossRefGoogle Scholar
Whalen, CK, Henker, B, O'Neil, R, Hollingshead, J, Holman, A & Moore, B (1994) Optimism in children's judgements of health and environmental risks. Health Psychology 13, 319325.CrossRefGoogle ScholarPubMed
Williams, T & Clarke, VA (1997) Optimistic bias in beliefs about smoking. Australian Journal of Psychology 49, 106112.CrossRefGoogle Scholar