A bottleneck in face identification: repetition priming from flanker images

There is evidence that face processing is capacity-limited in distractor interference tasks and in tasks requiring overt recognition memory. We examined whether capacity limits for faces can be observed with a more sensitive measure of visual processing, by measuring repetition priming of flanker faces that were presented alongside a face or a nonface target. In Experiment 1, we found identity priming for face flankers, by measuring repetition priming across a change in image, during task-relevant nonface processing, but not during the processing of a concurrently-presented face target. Experiment 2 showed perceptual priming of the flanker faces, across identical images at prime and test, when they were presented alongside a face target. In a third Experiment, all of these effects were replicated by measuring identity priming and perceptual priming within the same task. Overall, these results imply that face processing is capacity limited, such that only a single face can be identified at one time. Merely attending to a target face appears sufficient to trigger these capacity limits, thereby extinguishing identification of a second face in the display, although our results demonstrate that the additional face remains at least subject to superficial image processing.     

Hits and false positives in face matching: a familiarity-based dissociation

In recognition memory for unfamiliar faces, performance for target-present items (hits) does not correlate with performance for target-absent items (false positives), a result which runs counter to the more usual mirror effect. In this paper we examinesubjects' performance on fac e matching, a nd demonstrate no relationship-between performance on matching items and performance on nonmatching items. This absence of a mirror effect occurs for multidistractor, 1-in-10 matching tasks (Experiment 1) and for simple paired-item tasks (Experiment 2). In Experiment 3 we demonstrate that matching familiar faces produces a strong mirror effect. However, inverting the familiar faces causes the association to disappear once more (Experiment 4). We argue thatfamiliar and unfamiliar faces are represented in qualitatively different ways.     

Ghosts, UFOs, and magic: positive affect and the experiential system

Three studies examined the potential interactions of the experiential system and positive affect (PA) in predicting superstitious beliefs and sympathetic magic. In Study 1, experientiality and induced positive mood interacted to predict the emergence of belief in videos purporting to show unidentified flying objects or ghosts. In Study 2, naturally occurring PA interacted with experientiality to predict susceptibility to sympathetic magic, specifically difficulty in throwing darts at a picture of a baby (demonstrating the law of similarity). In Study 3, induced mood interacted with experientiality to predict sitting farther away from, and expressing less liking for, a partner who had stepped in excrement (demonstrating the law of contagion). Results are interpreted as indicating that PA promotes experiential processing. Implications for the psychology of nonrational beliefs and behaviors are discussed.     

Separation-Individuation Issues and Castration Anxiety: Their Curious Influence on the Epigenesis of Myopia

This author suggests that myopia is related to psychogenic factors involving an unconscious representation of, and defense against tension. Further, the argument is made that such tension directly causes the extra-ocular muscles of the eyeball to tighten, ultimately creating the errors of refraction, which define the condition known as myopia. The author makes the case that the specific nature of the tension has to do with an interruption in the separation–individuation process that has occurred, in which the myopic individual experiences separation anxiety, and is now “required” to stay close to the mother for fear of abandonment. Apparently, the only way myopes are then able to achieve some sort of psychological distance is through the development of high-level abstract conceptualization abilities. In addition to separation fears, this author notes that myopes exhibit significantly higher levels of castration anxiety as compared with normal-sighted individuals, matched in IQ. Tables showing empirical findings supporting the above psychoanalytic interpretations are provided for the readers review.     

Response of colony mice to intruders with different fighting experience

Six male mice placed in a large, moderately complex enclosure formed a stable dominance hierarchy in which two mice defended adjacent floor areas and the remaining four mice were subordinate and did not form territories. Intruder mice with winning or losing experience in prior paired encounters, or those with no fighting experience, were introduced individually into the colony for 30 minute periods. These intruders were attacked by the dominant members of the colony, and the fighting outcomes were strongly dependent upon the fighting experience of the intruder. Intruders with losing or no fighting experience engaged in little mutual fighting with residents, were easily defeated, and terminated attacks by engaging in subordinate behaviors. Intruders with winning experience fought vigorously with residents, attacked and, in many cases, defeated residents. These results suggest that relatively little winning experience gained in earlier paired encounters may be sufficient to overcome the various fighting advantages enjoyed by a dominant territorial holding member of a colony.     

Response of Methodist Preachers to Foot and Mouth Disease

In-depth interviews were conducted with a sample of eight Methodist preachers who led Harvest Festival services during the autumn of 2001 in areas where the harvest of flock and herd had been destroyed by foot and mouth disease. The data draw attention to both good practice and to bad practice in the ministry of preaching and pastoral engagement.     

The Face-Space Typicality Paradox: Understanding the Face-Space Metaphor

Some recent accounts of human face processing use the idea of 'face space', considered to be a multi-dimensional space whose dimensions correspond to ways in which faces can vary. Within this space, 'typicality' is sometimes taken to reflect the proximity of a face to its local neighbours. Intuitions about the distribution of faces within the space may suggest that the majority of faces will be 'typical' in these terms. However, when typicality measures are taken, researchers very rarely find that faces cluster at the 'typical' end of the scale. In this short note we attempt to resolve this paradox and point out that reasoning about high dimensional distributions requires that some specific assumptions are made explicit.     

Functional Analysis Identified Habit Reversal Components for the Treatment of Motor Tics

This study included brief functional analyses and treatment for motor tics exhibited by two children with Tourette Syndrome. Brief functional analyses were conducted in an outpatient treatment center and results were used to develop individualized habit reversal procedures. Treatment data were collected in clinic for one child and in clinic and school for the other child. Brief functional analysis results were mixed for each child, but provided useful information for informing unique habit reversal components for each child. Treatment results indicated reductions in motor tics for each child. Results are discussed in terms of utility of functional analysis for tics.     

Cognitive mediation of intervention effects on physical exercise: Causal models for the adoption and maintenance stage

Objective: To investigate how the effects of a group-based intervention program (MoVo-LISA) on exercise behaviour were mediated by cognitive variables. Different causal models mapping the short-term (adoption) and long-term (maintenance) intervention effects were tested using path analyses.

Design: N?=?220 in-patients of a rehabilitation clinic were assigned to an usual care or intervention group (quasi-experimental design). Questionnaire-based assessment was conducted at baseline; discharge; and at six weeks, six months and 12 months post discharge.

Measures: The potential mediator variables were outcome expectations, self-efficacy, strength of goal intention (intention strength), self-concordance, action planning and barrier management.

Results: Observed intervention effects on exercise behaviour (p?<?0.05) were mediated by intention strength at the adoption and maintenance stages, by action planning only at the adoption, and by barrier management only at the maintenance stage. Self-efficacy and outcome expectations were only indirectly involved in these mediations by affecting intention strength and self-concordance.

Conclusion: This is the first study to track the cognitive mediation processes of intervention effects on exercise behaviour over a long time-period by differentiating the adoption and maintenance stages of behaviour change. The findings emphasise the importance of deconstructing intervention effects (modifiability vs. predictive power of a mediator) to develop more effective interventions.