Alcohol intoxication and memory for events: a snapshot of alcohol myopia in a real-world drinking scenario

Alcohol typically has a detrimental impact on memory across a variety of encoding and retrieval conditions (e.g., Mintzer, 2007; Ray & Bates, 2006). No research has addressed alcohol's effect on memory for lengthy and interactive events and little has tested alcohol's effect on free recall. In this study 94 participants were randomly assigned to alcohol, placebo, or control groups and consumed drinks in a bar-lab setting while interacting with a "bartender". Immediately afterwards all participants freely recalled the bar interaction. Consistent with alcohol myopia theory, intoxicated participants only differed from placebo and control groups when recalling peripheral information. Expanding on the original hypervigilance hypothesis, placebo participants showed more conservative reporting behaviour than the alcohol or control groups by providing more uncertain and "don't know" responses. Thus, alcohol intoxication had confined effects on memory for events, supporting and extending current theories.     

The role of vividness of imagery in metaphor generation

Pointing to novel links between mental representation and social communication, we examine the association between vividness of imagery and use of metaphors. In a study on individual differences and three experiments, we demonstrate that vivid imagery is linked to greater use of metaphors and that this relationship is bi-directional. We also show that this relationship is stronger in the context of negative valence. We demonstrate that vivid imagery results in greater generation of metaphors (in particular, for negative concepts). In examining the reverse direction of influence, we show that in the negative (rather than positive) context, use of metaphors results in greater perceptions of vividness. We suggest that vividness can be signified and produced by using metaphors that play an important role in meaning making and communication.     

Memory conformity affects inaccurate memories more than accurate memories

After controlling for initial confidence, inaccurate memories were shown to be more easily distorted than accurate memories. In two experiments groups of participants viewed 50 stimuli and were then presented with these stimuli plus 50 fillers. During this test phase participants reported their confidence that each stimulus was originally shown. This was followed by computer-generated responses from a bogus participant. After being exposed to this response participants again rated the confidence of their memory. The computer-generated responses systematically distorted participants’ responses. Memory distortion depended on initial memory confidence, with uncertain memories being more malleable than confident memories. This effect was moderated by whether the participant's memory was initially accurate or inaccurate. Inaccurate memories were more malleable than accurate memories. The data were consistent with a model describing two types of memory (i.e., recollective and non-recollective memories), which differ in how susceptible these memories are to memory distortion.     

Anticipation of subsequent demanding exercise increases the expression of haem oxygenase-1 mRNA in human lymphocytes

Oxidative stress induces the expression of the cytoprotective and anti-inflammatory protein haem oxygenase-1 (HO-1). In the present investigation, we show that anticipation of subsequent exercise elevates the expression of HO-1 mRNA in lymphocytes. A between-groups comparison of HO-1 mRNA expression in subjects about to complete a half marathon race vs. subjects who were asked to sit quietly in the laboratory showed an elevated expression of HO-1 mRNA prior to exercise (2.6-fold higher in subjects prior to the half marathon, P < 0.01). This observation led us to examine whether anticipation of subsequent exercise leads to differences in lymphocyte HO-1 mRNA expression within the same subjects. In a second experiment, the same individuals completed two trials, one exercise and one rest, approximately 2 weeks apart in a randomised cross-over design. Lymphocyte HO-1 mRNA expression was greater prior to exercise (1.4 +/- 0.3-fold higher in the exercise trial, P < 0.05). These results suggest that knowledge of subsequent demanding exercise may lead to an anticipatory induction of HO-1 mRNA. We tentatively propose that this process has evolved to prepare lymphocytes for subsequent exercise-induced oxidative stress although the mechanism remains to be elucidated.     

Peas in a pod: biases in the measurement of sibling temperament?

The authors of the present study addressed the measurement of temperament by examining the convergence between observational and questionnaire measures and the occurrence of contrast effects in parental ratings of non-twin siblings on the Children's Behavior Questionnaire. Fathers', mothers', and observers' ratings of 94 early-school-age sibling pairs were obtained longitudinally such that siblings were rated at the same time and when they were the same ages. Convergence between laboratory observations and questionnaires was generally modest to moderate for shyness and activity level; low to modest for positive emotionality, fear, and interest; and low for anger and sadness. We found some evidence of contrast effects for activity level and fathers' ratings of shyness and of assimilation effects for anger and sadness. The results highlight the complexity of measuring temperament and suggest that rater biases should be evaluated according to the measurement instrument used.     

Using Statistical Models of Morphology in the Search for Optimal Units of Representation in the Human Mental Lexicon

Determining optimal units of representing morphologically complex words in the mental lexicon is a central question in psycholinguistics. Here, we utilize advances in computational sciences to study human morphological processing using statistical models of morphology, particularly the unsupervised Morfessor model that works on the principle of optimization. The aim was to see what kind of model structure corresponds best to human word recognition costs for multimorphemic Finnish nouns: a model incorporating units resembling linguistically defined morphemes, a whole‐word model, or a model that seeks for an optimal balance between these two extremes. Our results showed that human word recognition was predicted best by a combination of two models: a model that decomposes words at some morpheme boundaries while keeping others unsegmented and a whole‐word model. The results support dual‐route models that assume that both decomposed and full‐form representations are utilized to optimally process complex words within the mental lexicon.     

Brand (in)fidelity: When Flirting with the Competition Strengthens Brand Relationships

We document the existence and consequences of brand flirting: a short‐lived experience in which a consumer engages with and/or indulges in the alluring qualities of a brand without committing to it. We propose that brand flirting is exciting, and that when consumers flirt with a brand other than their typically preferred brand in the same product category, they can transfer this excitement to their preferred brand—resulting in even greater love and desire for it. Consistent with this conceptual account, we demonstrate that this brand flirting effect is mediated by excitement. Moreover, the brand flirting effect is most likely to emerge under conditions that facilitate arousal transfer: when consumers are highly committed to their preferred brand, and when the brand with which consumers flirt is similar to their preferred brand.     

When pooping babies become more appealing: the effects of nonconscious goal pursuit on experienced emotions

In this report, we argue that the intensity of the emotions people experience is partly determined by the goals they nonconsciously pursue, and that this effect is functional in nature: Emotions are modulated in ways that may increase the probability of goal achievement. To test this hypothesis, we primed female participants with a motherhood goal and then measured their level of disgust in response to mildly disgusting pictures. Priming led to a reduction of disgust in response to goal-relevant stimuli (e.g., pictures of babies with runny noses) but not goal-irrelevant stimuli. This effect was moderated by the women's probability of conception, a proxy of their ability to pursue the motherhood goal.     

Choice and source attractiveness in exposure to discrepant messages

The effects of choice, source attractiveness, and discrepancy size on the acceptance of a message about a tuition increase were investigated under high involvement conditions. In keeping with dissonance theory predictions, the results showed that when subjects chose to expose themselves to the discrepant message, the message from an unattractive source produced the most opinion change. Under no choice conditions, more change was produced by the message from the attractive source. However, this effect only occurred at the highest message disrepancy level. The results were interpreted in terms of the prevailing real-life conditions under which the study was run in line with an expectancydissonance approach.