A stimulus set of words and pictures matched for visual and semantic similarity

Researchers in different fields of psychology have been interested in how vision and language interact, and what type of representations are involved in such interactions. We introduce a stimulus set that facilitates such research (available online). The set consists of 100 words each of which is paired with four pictures of objects: One semantically similar object (but visually dissimilar), one visually similar object (but semantically dissimilar), and two unrelated objects. Visual and semantic similarity ratings between corresponding items are provided for every picture for Dutch and for English. In addition, visual and linguistic parameters of each picture are reported. We thus present a stimulus set from which researchers can select, on the basis of various parameters, the items most optimal for their research question.     

Revisiting the looking at nothing phenomenon: Visual and semantic biases in memory search

When visual stimuli remain present during search, people spend more time fixating objects that are semantically or visually related to the target instruction than looking at unrelated objects. Are these semantic and visual biases also observable when participants search within memory? We removed the visual display prior to search while continuously measuring eye movements towards locations previously occupied by objects. The target absent trials contained objects that were either visually or semantically related to the target instruction. When the overall mean proportion of fixation time was considered, we found biases towards the location previously occupied by the target, but failed to find biases towards visually or semantically related objects. However, in two experiments the pattern of biases towards the target over time provided a reliable predictor for biases towards the visually and semantically related objects. We therefore conclude that visual and semantic representations alone can guide eye movements in memory search, but that orienting biases are weak when the stimuli are no longer present.     

When and why hierarchy steepness is related to team performance

This study develops and tests a contingency theory on the functions of status hierarchy steepness in teams. Findings from a field study among 438 employees working in 72 work teams across diverse business settings demonstrate that task complexity moderates the relationships between status hierarchy steepness, different types of team conflict, and team performance. Steeper status hierarchies were negatively related to both process and task conflict, and hence increased team performance in teams working on tasks with lower complexity but did not yield such clear conflict and performance effects in teams working on more complex tasks. By showing that various levels of task complexity determine whether status hierarchy steepness has a conflict-regulating function that drives team performance, this research generates valuable insights about the context dependency of team responses to status hierarchy steepness.     

Psychologists’ Evaluation of Bariatric Surgery Candidates Influenced by Patients’ Attachment Representations and Symptoms of Depression and Anxiety

This study examines whether patients self-reported attachment representations and levels of depression and anxiety influenced psychologists’ evaluations of morbidly obese patients applying for bariatric surgery. A sample of 250 patients (mean age 44, 84 % female) who were referred for bariatric surgery completed questionnaires to measure adult attachment and levels of depression and anxiety. Psychologists rated patients’ suitability for bariatric surgery using the Cleveland Clinic Behavioural Rating System (CCBRS), unaware of the results of the completed questionnaires. Attachment anxiety (OR = 2.50, p = .01) and attachment avoidance (OR = 3.13, p = .001) were found to be associated with less positive evaluations on the CCBRS by the psychologists, and symptoms of depression and anxiety mediated this association. This study strongly supports the notion that patients’ attachment representations influence a psychologist’s evaluation in an indirect way by influencing the symptoms of depression and anxiety patients report during an assessment interview. The clinical implications of these findings are discussed.