AimThis research compared real-time measurements of alcohol consumption with retrospective accounts of alcohol consumption to examine possible discrepancies between, and contextual influences on, the different accounts.MethodBuilding on previous investigations, a specifically designed Smartphone technology was utilized to measure alcohol consumption and contextual influences in de facto real-time. Real-time data (a total of 10,560 data points relating to type and number of drinks and current social / environmental context) were compared with daily and weekly retrospective accounts of alcohol consumption.ResultsParticipants reported consuming more alcoholic drinks during real-time assessment than retrospectively. For daily accounts a higher number of drinks consumed in real-time was related to a higher discrepancy between real-time and retrospective accounts. This effect was found across all drink types but was not shaped by social and environmental contexts. Higher in-vivo alcohol consumption appeared to be related to a higher discrepancy in retrospectively reported weekly consumption for alcohol beverage types other than wine. When including contextual factors into the statistical models, being with two or more friends (as opposed to being alone) decreased the discrepancy between real-time and retrospective reports, whilst being in the pub (relative to being at home) was associated with greater discrepancies.ConclusionsOverall, retrospective accounts may underestimate the amount of actual, real-time alcohol consumed. Increased consumption may also exacerbate differences between real-time and retrospective accounts. Nonetheless, this is not a global effect as environmental and social contexts interact with the type of alcohol consumed and the time frame given for reporting (weekly vs. daily retrospective). A degree of caution therefore appears warranted with regards to the use of retrospective self-report methods of recording alcohol consumption. Whilst real-time sampling is unlikely to be completely error free, it may be better able to account for social and environmental influences on self-reported consumption.

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To assess the validity of the research into alcohol-related outcome expectancies a systematic review of 80 articles published between 1970 and 2013 was conducted. Participant gender, age, and contextual influences are highlighted as possible causes of the observed variations in research findings. There is a need for fuller consideration of the influences of demographics and environmental and social contexts on research findings. It is recommended that alcohol intake measures should be standardized to a greater degree in future research. Contextual influences on expectancies also require extensive future investigation to increase the validity of research and improve alcohol-related interventions.

The purpose of this study was to examine the effect of environmental contexts on alcohol norms, expectancies, and efficacy ratings. University students (n = 177) recruited via opportunity sampling completed questionnaires in either university lecture theaters or in a student bar. Positive social, fun, and tension reduction outcome expectancies were higher and social drink refusal self efficacy was lower in those participants questioned in a student bar relative to those questioned in a university lecture theater. These differences were found while controlling for between-groups variations in typical alcohol consumption quantities. Although hitherto largely unexamined by research, context appears to be a potentially important moderator of alcohol-related cognitions. Such findings require further exploration to inform more effective intervention approaches and have implications for the validity of existing literature.

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Previous research has suggested that the calculation of another’s perspective is cognitively efficient, whereas perspective selection (selection of a particular perspective, self or other) is associated with executive function, particularly inhibitory control. However, research has not previously tested how perspective calculation and selection may be associated with another key executive function, working memory. In the present study (N = 54 adult participants), we administered a Level-1 visual perspective task in a dual-task paradigm in which the secondary task required working memory. The results suggest that executive function is associated with both perspective calculation and perspective selection, contrary to previous evidence from similar dual-task studies that had used inhibitory control and attention-based secondary tasks. This contrast may suggest that working memory capacity facilitates perspective-taking. Furthermore, it may follow that the notion of simple perspective-taking is distinct from more the complex and cognitively demanding “theory of mind.” Research of this nature warrants further investigation.

These findings suggest that decreases in inhibitory control in response to alcohol-related cues might generalise to other appetitive liquids, possibly due to evaluative conditioning. Implications for existing research methodologies include the use of appetitive control conditions and the diversification of cues within tests of alcohol-related inhibitory control.

Alcohol-related expectancies do not appear to be static but instead demonstrate variation across social and environmental contexts. Modern technology can be usefully employed to provide a more ecologically valid means of measuring such beliefs.