A secondary task is not always costly: Context‐based guidance of visual search survives interference from a demanding working memory task

Repeatedly encountering a visual search display with the target located at a fixed position relative to the distractors facilitates target detection, relative to novel displays – which is attributed to search guidance by (acquired) long‐term memory (LTM) of the distractor ‘context’ of the target. Previous research has shown that this ‘contextual cueing’ effect is severely impeded during learning when participants have to perform a demanding spatial working memory (WM) task concurrently with the search task, though it does become manifest when the WM task is removed. This has led to the proposal that search guidance by LT context memories critically depends on spatial WM to become ‘expressed’ in behaviour. On this background, this study, of two experiments, asked: (1) Would contextual cueing eventually emerge under dual‐task learning conditions if the practice on the task(s) is extended beyond the short training implemented in previous studies? and given sufficient practice, (2) Would performing the search under dual‐task conditions actually lead to an increased cueing effect compared to performing the visual search task alone? The answer is affirmative to both questions. In particular, Experiment 1 showed that a robust contextual cueing effect emerges within 360–720 dual‐task trials as compared to some 240 single‐task trials. Further, Experiment 2 showed that when dual‐ and single‐task conditions are performed in alternating trials blocks, the cueing effect for the very same set of repeated displays is significantly larger in dual‐task blocks than in single‐task blocks. This pattern of effects suggests that dual‐task practice eventually leads to direct, or ‘automatic’, guidance of visual search by learnt spatial LTM representations, bypassing WM processes. These processes are normally engaged in single‐task performance might actually interfere with direct LTM‐based search guidance.     

Eating attitudes and their psychological correlates among Turkish adolescents

This study examined the eating attitudes and psychological characteristics of Turkish late adolescents. Seven hundred eighty-three university students were administered the Eating Attitudes Test, Rosenberg Self-Esteem Scale, State-Trait Anxiety Inventory, and Social Physique Anxiety Scale. More than one in ten (9.2% of the males and 13.1% of the females) had abnormal eating attitude scores. Chi-square analysis revealed that there were no significant differences in the prevalance of abnormal eating behaviors based on gender. Analysis of covariance indicated that participants who had disturbed eating attitudes had lower self-esteem, higher social physique anxiety, and higher trait anxiety than those who had normal eating attitudes. It was concluded that the prevalence of disturbed eating attitudes was high among these Turkish late adolescents, and that disturbed eating attitudes were related to several psychological characteristics.     

Prevalence of bulimic behaviors and trends in eating attitudes among Turkish late adolescents

The eating attitudes and the prevalence of bulimic behaviors in a group of 300 late adolescents were investigated using the key questions from the Bulimia Investigatory Test, Edinburgh (BITE), and additional questions. Only four subjects (1.3%) scored above the cut-off point on the BITE, and prevalence rates of males and females were the same. Results showed that higher symptom scale scores were associated with the emergence of binge eating behavior and high energy intake. Females were less likely than males to see themselves as normal eaters and more likely to feel "miserable" when they binge. Higher score groups evidenced more dieting behavior than other groups and also more abnormal eating behavior. It was concluded that the prevalence of bulimic behaviors in Turkish late adolescents was low, but there was an increasing risk since they share Western ideals of slimness and engage in dieting.