Caffeine cravings impair memory and metacognition

Cravings for food and other substances can impair cognition. We extended previous research by testing the effects of caffeine cravings on cued-recall and recognition memory tasks, and on the accuracy of judgements of learning (JOLs; predicted future recall) and feeling-of-knowing (FOK; predicted future recognition for items that cannot be recalled). Participants (N?=?55) studied word pairs (POND-BOOK) and completed a cued-recall test and a recognition test. Participants made JOLs prior to the cued-recall test and FOK judgements prior to the recognition test. Participants were randomly allocated to a craving or control condition; we manipulated caffeine cravings via a combination of abstinence, cue exposure, and imagery. Cravings impaired memory performance on the cued-recall and recognition tasks. Cravings also impaired resolution (the ability to distinguish items that would be remembered from those that would not) for FOK judgements but not JOLs, and reduced calibration (correspondence between predicted and actual accuracy) for JOLs but not FOK judgements. Additional analysis of the cued-recall data suggested that cravings also reduced participants’ ability to monitor the likely accuracy of answers during the cued-recall test. These findings add to prior research demonstrating that memory strength manipulations have systematically different effects on different types of metacognitive judgements.     

Self-bias modulates saccadic control

We present novel data on the role of attention in eliciting enhanced processing of stimuli associated with self. Participants were required to make pro- or anti-saccades according to whether learned shape–label pairings matched or mismatched. When stimuli matched participants were required to make an anti-saccade, and when the stimuli mismatched a pro-saccade was required. We found that anti-saccades were difficult to make to stimuli associated with self when compared to stimuli associated with a friend and a stranger. In contrast, anti-saccades to friend-stimuli were easier to make than anti-saccades to stranger-stimuli. In addition, a correct anti-saccade to a self-associated stimulus disrupted subsequent pro-saccade trials, relative to when the preceding anti-saccade was made to other stimuli. The data indicate that self-associated stimuli provide a strong cue for explicit shifts of attention to them, and that correct anti-saccades to such stimuli demand high levels of inhibition (which carries over to subsequent pro-saccade trials). The self exerts an automatic draw on attention.     

Listeners feel the beat: Entrainment to English and French speech rhythms

Can listeners entrain to speech rhythms? Monolingual speakers of English and French and balanced English–French bilinguals tapped along with the beat they perceived in sentences spoken in a stress-timed language, English, and a syllable-timed language, French. All groups of participants tapped more regularly to English than to French utterances. Tapping performance was also influenced by the participants’ native language: English-speaking participants and bilinguals tapped more regularly and at higher metrical levels than did French-speaking participants, suggesting that long-term linguistic experience with a stress-timed language can differentiate speakers’ entrainment to speech rhythm.     

Changes in alcohol intake in response to transdiagnostic cognitive behaviour therapy for eating disorders

Objective

The aim of this study was to examine how alcohol intake changes during and after transdiagnostic cognitive behaviour therapy for eating disorders (CBT-E). Additionally, the paper considers the relationship between alcohol consumption, eating disorder diagnosis and current major depressive episode at the time of first assessment.

Method

One hundred and forty nine outpatients with an eating disorder (body mass index over 17.5) were divided into high or low alcohol intake groups (HIG and LIG) according to their intake at pre-treatment assessment. Their alcohol intake and eating disorder psychopathology were examined over the course of treatment and follow-up.

Results

There was no difference between the groups on response of the eating disorder to treatment. The HIG significantly reduced their alcohol intake following treatment whilst the intake of the LIG remained stable over the course of treatment and follow-up. There were no group differences in major depression and overall severity of eating disorder at baseline.

Conclusions

The response to CBT-E was not influenced by baseline level of alcohol use. The mean alcohol intake of the heavy drinking subjects decreased without being specifically addressed by the treatment.     

Aesthetic preferences in the size of images of real-world objects

Konkle and Oliva (in press, Journal of Experimental Psychology: Human Perception and Performance) found that the preferred ('canonical') visual size of a picture of an object within a frame is proportional to the logarithm of its known physical size. They used within-participants designs on several tasks, including having participants adjust the object's size to 'look best'. We examined visual size preference in 2AFC tasks with explicit aesthetic instructions to choose: "which of each pair you like best". We also used both within- and between-participants conditions to investigate the possible role of demand characteristics. In experiments 1 and 2, participants saw all possible image pairs depicting the same object at six different sizes for twelve real-world objects that varied in physical size. Significant effects of known physical size were present, regardless of whether participants made judgments about a single object (the between-participants design) or about all objects intermixed (the within-participants design). Experiment 3 showed a reduced effect when the amount of image detail present at different visual sizes was kept constant by posterizing the images. The results are discussed in terms of ecological biases on aesthetic preferences.     

Parent-Child Engagement in Decision Making and the Development of Adolescent Affective Decision Capacity and Binge Drinking

The goal of this study was to investigate how parents’ engagement of their child in everyday decision-making influenced their adolescent’s development on two neuropsychological functions, namely, affective decision-making and working memory, and its effect on adolescent binge-drinking behavior.We conducted a longitudinal study of 192 Chinese adolescents. In 10th grade, the adolescents were tested for their affective decision-making ability using the Iowa Gambling Task (IGT) and working memory capacity using the Self-ordered Pointing Test (SOPT). Questionnaires were used to assess perceived parent-child engagement in decision-making, academic performance and drinking behavior. At one-year follow-up, the same neuropsychological tasks and questionnaires were repeated.Results indicate that working memory and academic performance were uninfluenced by parent-child engagement in decision-making. However, compared to adolescents whose parents made solitary decisions for them, adolescents engaged in everyday decision-making showed significant improvement on affective decision capacity and significantly less binge-drinking one year later.These findings suggest that parental engagement of children in everyday decision-making might foster the development of neurocognitive functioning relative to affective decision-making and reduce adolescent substance use behaviors.     

A Wake-Up Call? Issues With Plagiarism in Transnational Higher Education

The views on plagiarism of 574 students at four Australian universities operating in Singapore were investigated through a survey and interviews. Analysis of students’ responses to different plagiarism scenarios revealed misconceptions and uncertainties about many aspects of plagiarism. Self-plagiarism and reuse of a friend’s work were acceptable to more than one quarter of the students, and nearly half considered collusion to be a legitimate form of collaboration. One quarter of the students also indicated that they would knowingly plagiarize. This should serve as a wake-up call regarding plagiarism in transnational higher education. Seven measures are recommended to curb plagiarism and foster academic integrity.     

Psychological Essentialism: A Review Of E. Margolis And S. Laurence (Eds.), Concepts: Core Readings.

Concepts: Core Readings (1999) is an edited volume of articles representing five major theories of concepts within cognitive psychology. Of the five, only the prototype theory can be interpreted in terms arising from a behavioral analysis. Two conceptual problems pervade nearly all of the papers in the volume. The first is an implicit commitment to essentialism; concepts are reified and are commonly discussed as though they have essential properties. Second, the theories suffer from a defective theory of verbal behavior. No distinction is made between verbal operants and words drawn from a hat.     

Boundaries,journals and counselling psychology: Stephen Palmer interviews Kasia Szymanska

You have just retired from editing Counselling Psychology Review, the in-house journal of the British Psychological Society, Division of Counselling Psychology. It seems an appropriate moment to interview you for Counselling Psychology Quarterly. In this interview I want to focus on a topic I know you are interested in, client-therapist boundary issues, and your experience editing the journal. But I'd like to start off at a slight tangent. What encouraged you to go into counselling psychology as a profession?     

Rohling's Interpretive Method and Inherent Limitations on the Flexibility of “Flexible Batteries”

Miller and Rohling (2001) proposed a 24-step algorithm, the Rohling Interpretive Method (RIM), for quantitative interpretation of results from flexible neuropsychological test batteries. We believe that the RIM as presented in that paper has several conceptual problems, including (a) a failure to distinguish "statistically significant" from pathological differences, (b) an assumption that declines in specific abilities can be inferred when a particular test score deviates from an estimate of general premorbid ability, and (c) confusion between the standard deviation associated with individual test scores versus that of a composite of those scores. As an alternative, we suggest the value of developing and using co-normed comprehensive neuropsychological test batteries from which test users might select subsets of tests.