Capacity limits for face processing

We present three experiments in which subjects were asked to make speeded sex judgements (Experiment 1) or semantic judgements (Experiments 2 and 3) to face targets and nonface items, while ignoring a solitary flanking distractor face or a nonface stimulus. Distractors could be either congruent (same response category) or incongruent (different response category) with the target. Distractor congruency effects were consistently observed in all combinations of target-distractor stimulus pairs, except when a distractor face flanked a target face. The failure to find congruency effects in this condition was explored further in a fourth experiment, in which four task-irrelevant flankers were simultaneously presented. Once again, no face-face congruency effects were found, even though comparison distractors interfered with face and nonface targets alike. However, four simultaneously presented distractor faces did not interfere with nonface targets either. We suggest that these experiments demonstrate a capacity limit for visual processing in these conditions, such that no more than one face is processed at a time.     

Family ties: constructing family time in low-income families

"Family time" is reflected in the process of building and fortifying family relationships. Whereas such time, free of obligatory work, school, and family maintenance activities, is purchased by many families using discretionary income, we explore how low-income mothers make time for and give meaning to focused engagement and relationship development with their children within time constraints idiosyncratic to being poor and relying on welfare. Longitudinal ethnographic data from 61 low-income African American, European American, and Latina American mothers were analyzed to understand how mothers construct family time during daily activities such as talking, play, and meals. We also identify unique cultural factors that shape family time for low-income families, such as changing temporal orientations, centrality of television time, and emotional burdens due to poverty. Implications for family therapy are also discussed.     

Robust representations for face recognition: the power of averages

We are able to recognise familiar faces easily across large variations in image quality, though our ability to match unfamiliar faces is strikingly poor. Here we ask how the representation of a face changes as we become familiar with it. We use a simple image-averaging technique to derive abstract representations of known faces. Using Principal Components Analysis, we show that computational systems based on these averages consistently outperform systems based on collections of instances. Furthermore, the quality of the average improves as more images are used to derive it. These simulations are carried out with famous faces, over which we had no control of superficial image characteristics. We then present data from three experiments demonstrating that image averaging can also improve recognition by human observers. Finally, we describe how PCA on image averages appears to preserve identity-specific face information, while eliminating non-diagnostic pictorial information. We therefore suggest that this is a good candidate for a robust face representation.     

“Sharing in people's pain is not an easy thing to do”: Cognitive Behavioural Therapists' understandings of compassion in the workplace

Objectives

Compassion is central to the aim of improving patient care and staff well-being within healthcare systems. To inform service development, explorations of experiences and meanings of compassion are needed. This study explored cognitive behavioural therapists ' understandings of compassion within their work environment.

Design

A qualitative study was conducted using semistructured interviews and interpretative phenomenological analysis (IPA).

Methods

Data were obtained from five practicing cognitive behavioural therapists.

Results

Two superordinate themes were developed, each with two subordinate themes. CBT therapists reported entering the profession with intrinsic motivation to care for others. They further developed an interest in compassion with exposure to clients and ongoing professional development in compassion-focused therapy (CFT). Compassionate work environments helped to facilitate compassionate practice; however, for many, workplaces were perceived to lack compassion. Challenges were encountered when negative workplace interactions left therapists feeling fatigued, distressed and demoralised. There was a desire for recognition and to be seen as more than a “work machine,” the experience of which was a threat to retaining therapists within the profession.

Conclusions

Current recruitment and training processes are producing staff with skills and motivation to deliver compassionate care. However, lack of compassion within workplaces can be a barrier to actioning these skills and motivations. Research needs to focus on how to effectively implement and run systems that are compassionate for both staff and clients. To provide compassionate care, staff need work environments that show compassion to them. These findings provide some insights into and practical suggestions regarding how this can be achieved.     

Discrimination of vibrotactile frequencies in a delayed pair comparison task

This study quantified human short-term-memory decay functions for delayed vibrotactile frequency discriminations. Subjects indicated which of two successive intervals contained the higher or lower frequency of a pair separated by delay periods of 0.5–30 sec. Performance decreased as a function of length of delay and was higher when delays were unfilled than when they were filled with a backwardscounting task. This interpolated task may have interfered with rehearsal of a coded representation of the remembered vibrotactile frequency. A change in decay rate after 5-sec delays suggests a switch from reliance on sensory memory to the coded frequency representation. Performance and decay rate depended on presentation order of higher or lower frequency within pairs. Reciprocal performance asymmetries seen in high- versus low-frequency ranges did not result from simple response bias.     

Feeling grown up: the differential role of alcohol and tobacco among male and female adolescents

A sample of 147 female and 183 male year nine pupils, between the ages of 14 and 15 years, was invited to describe an event in their lives through which they thought that they had matured or grown. The girls were twice as likely as the boys to mention an event involving smoking. The boys were twice as likely as the girls to mention an event involving drinking. These findings confirm the different significance ascribed to both alcohol and tobacco by adolescent males and females as a landmark or milestone in the process of maturation. The implications of these findings for health education are discussed.     

A multiple-choice airstream design for olfactory discrimination training of small animals

A multiple wind-tunnel olfactory discrimination apparatus is described and evaluated. The apparatus allows for the simultaneous presentation of odor or visual cues and permits direct comparisons to be made on visual and olfactory discrimination performance.     

Expectancy Accessibility and the Influence of Outcome Expectancies on Adolescent Smokeless Tobacco Use

This study investigated the moderating influence of expectancy accessibility on the relation between outcome expectancies and drug use intentions. Specifically, it was hypothesized that expectancies made temporarily more accessible would predict smokeless tobacco intentions to a greater degree than would less accessible expectancies. In addition, it was anticipated that expectancies regarding positive outcomes of smokeless tobacco use would be better predictors of intention than would expectancies about negative outcomes. Results partially supported the accessibility hypothesis, but this effect occurred for positive outcome expectancies only. In addition, the anticipated prepotency of positive over negative expectancies in predicting drug use intentions was strongly supported. These findings are consistent with theories of problem behavior which differentiate between positive and negative outcome expectancies and which postulate that accessibility of expectancies plays an important role in expectancy-behavior relations.     

Can shape be perceived by dynamic touch?

The possibility that some aspects of the shapes of solid objects can be perceived through dynamic touch, even when the objects are not touched, but simply wielded with a handle, was investigated in four experiments. Wooden solids were constructed of three sizes and five shapes: hemisphere, cylinder, parallelepiped, cone, and pyramid. Experiments 1 and 2 involved comparisons (judgments of same or different) between and among wielded objects of the same mass. In Experiments 3 and 4, subjects were required to wield an object and to select a match from a visible arrangement of objects of the five shapes; the wielded objects were of two sizes, each different from that of the visible objects. The success of subjects at these tasks, and the patternings of errors, are seen to involve the characteristic moment of inertia profiles of each shape, and a ratio of the object's resistances to rotation around orthogonal axes is shown to be a strong predictor of performance in the identification experiments. The results are discussed with reference to dynamic touch and to the notion of shape invariants that do not reduce to aspects of object surface.     

An Examination of the Effects of Information Consistency and Distinctiveness in a Reference-Price Advertisement Context

Drawing from theories of social cognition and perception, the effects of information consistency and distinctiveness implied by semantic cues in reference price ads are examined in a 2 (Levels of Distinctiveness) × 2 (Levels of Consistency) × 3 (Levels of Reference Price) between-subjects experimental design. Both the reference-price level and the perceived distinctiveness of information implied by the semantic cue had significant effects on internal price standard and attitudinal and perceptual dependent variables. Consistency information had no effect. Competing rationales drawn from assimilation-contrast theory and anchoring and adjustment effects on judgment are offered as bases for reference-price predictions. Results reveal that reference-price level had a monotonic effect on most dependent variables, and thus are more consistent with effects predicted by anchoring and adjustment rationales.