British Journal of Addiction (1992) 87, 929-930

SHORT REPORT

Negative and positive expectancies in lone and group problem drinkers BARRY T. JONES & JOHN McMAHON Nurse Information Processing Group, Department of Psychology, University of Glasgow, Scotland

Abstract In this experiment we show that measuring positive expectancy of alcohol use does not discriminate between lone and group problem drinkers whereas measuring negative expectancy does. Reliably, lower measures in group drinkers is consistent with; (i) our view that negative expectancy provides the motivation for problem drinkers to quit and that anything which inhibits the translation of negative experience into negative expectancy will correspondingly inhibit motivation; and with (ii) the observations of others that social (or group) support can, indeed, often inhibit recovery. Motivation in problem drinkers both during treatment and thereafter appears to be heavily implicated in recovery from alcohol abuse. Indeed, one study has shown that as much as two-thirds of the variance in treatment outcome is accounted for by motivation and only one-third by the treatment, itself.' Where it was once interpreted as a function of 'moral fibre' or an intrinsic personality trait, motivation is now better seen as a cognitive dynamic initiated, maintained or revised by experience.^ Many see the concept of expectancy as the doorway to this subjective world, since expectancy refers to a drinker's beliefs about the outcome of alcohol use and it is these expectations that motivate drinking.-' Knowing a problem drinker's positive expectancies, should ensure that treatment is more individually tailored and, consequently, it should have a more effective outcome.'' For this reason, much effort has gone into establishing ways of measuring positive expectancies.'"' However, disproportionately little attention has been paid to problem drinkers' negative expectancies of alcohol use, yet it is most likely negative experiences that have driven them to treatment in the first place. McMahon & Jones' have developed a framework of change for alcohol abuse which incorporates a statement of the preconditions necessary for a more successful outcome of treatment and how these preconditions might be generated. In contrast to the frequent focus upon positive expectan-

cies, they target the role played by negative experiences and the learning mechanisms through which these effect (or fail to effect) negative expectancies. Within the framework of their Revised Expectancy Motivation hypothesis (REMh), problem drinkers who could be loosely described as 'poorly motivated' are those whose negative experiences (through their own faulty appraisal processes) have erroneous causes attributed to them with the consequence that these negative experiences never translate into negative expectancies of alcohol. It is this process, McMahon and Jones claim, that should be the first target of treatment (e.g. through such devices as Miller's motivational interviewing) but whereas there are highly-researched instruments for measuring positive expectancies, the same could not be said,unfortunately,ofnegative expectancies. Ways of measuring negative expectancies need to be developed comparable with the instruments available for measuring positive expectancies. Also, if the REMh is an accurate account ofchange, it is important to identify factors which both promote and inhibit the formation of negative expectancy. The work reported below begins to address these goals using a 60-item, likert-scale Negative Alcohol Expectancy Questionnaire (NAEQ) that we are currently piloting in many of the alcohol treatment centres in Glasgow. If negative experiences translate to negative expectancies through learning, then any process that reduces either the perceived frequency or intensity

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of negative experiences will inhibit learning and, therefore, the growth of negative expectancies. There are good reasons for believing that negative expectancy will be attenuated in group rather than lone problem drinkers. Social networks or groups (family, significant others and peers), while sometimes motivating problem drinkers to enter treatment,' can equally inhibit this by 'cushioning' them from the negative experiences that drinking will bring.'"'" When the network or group consists of like-minded individuals (such as problem drinkers) then 'buffering' from the potential effects of stressful situations (negative experiences that a problem drinker will surely generate) becomes pronounced.'^ Not only does this group provide support, it also provides a norm'^'" against which a member of the group can compare his own negative experiences. By contrast, therefore, otherwise substantially negative experiences are perceived as 'normal', an intuitive defense that has not escaped the heavy drinker for as negative experiences worsen with increased consumption and begin to contrast unfavourably with the group's, new companions are sought in an effort to reduce the contrast.'"*''^ The whole process of support, contrast reduction and decline is exacerbated by the fact that individuals within such groups tend to mistakenly perceive themselves as more favourably adjusted than their peers.'^-" Consequently, drinking in groups should reduce the perception of negative experiences and inhibit their translation to negative alcohol expectancies. Within the framework of REMh, therefore, negative expectancies, as measured by the NAEQ, should discriminate between lone and group drinkers and provide a test of the discriminatory power of the pilot NAEQ. The NAEQ and Brown et al.'s (positive) Alcohol Expectancy Questionnaire* were given to two groups of patients admitted to Gartnavel Royal Hospital's Alcohol and Drug Detoxification Unit. Group L comprised 25 lone drinkers and Group G 25 group drinkers. Reliably higher negative expectancy scores were found in Group L than Group G (f = 2.5, d f = 4 8 , p = 0.016, 2-tail) whereas no reliable difference was found for positive expectancy (£ = 0.19, df = 48, p = 0.86, 2-tail). Within an approach such as that of the REMh, that addresses motivation to stop drinking rather than motivation to drink and within the confines of the current experiment, a pilot negative expectancy measure discriminates between two quite different types of problem drinker whereas a substantiallyvalidated positive measure does not. If these results can be generalized and negative expectancy has clinical utility, then it points to a need to pay more attention to: (1) the concept of negative expectancy

itself; (2) its relationship with negative experiences; and (3) researching its measurement. Acknowledgements This work was supported by a Scottish Office Home and Health Department Nursing Research Fellowship to the second author supervised by the first. References 1. PROCHASKA, J. O . & DICLEMENTE, C . C . (1985)

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Negative and positive expectancies in lone and group problem drinkers.

In this experiment we show that measuring positive expectancy of alcohol use does not discriminate between lone and group problem drinkers whereas mea...
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