Scene memory is more detailed than you think: the role of categories in visual long-term memory

Observers can store thousands of object images in visual long-term memory with high fidelity, but the fidelity of scene representations in long-term memory is not known. Here, we probed scene-representation fidelity by varying the number of studied exemplars in different scene categories and testing memory using exemplar-level foils. Observers viewed thousands of scenes over 5.5 hr and then completed a series of forced-choice tests. Memory performance was high, even with up to 64 scenes from the same category in memory. Moreover, there was only a 2% decrease in accuracy for each doubling of the number of studied scene exemplars. Surprisingly, this degree of categorical interference was similar to the degree previously demonstrated for object memory. Thus, although scenes have often been defined as a superset of objects, our results suggest that scenes and objects may be entities at a similar level of abstraction in visual long-term memory.     

Are driving simulators effective tools for evaluating novice drivers’ hazard anticipation,speed management,and attention maintenance skills?

Novice drivers (teen drivers with their solo license for 6 months or less) are at a greatly inflated risk of crashing. Post hoc analyses of police accident reports indicate that novice drivers fail to anticipate hazards, manage their speed, and maintain attention. These skills are much too broadly defined to be of much help in training. Recently, however, driving simulators have been used to identify those skills which differentiate the novice drivers from older, more experienced drivers in the areas of hazard anticipation and speed management. Below, we report an experiment on a driving simulator which compares novice and experienced drivers’ performance in the third area believed to contribute especially heavily to crashes among novice drivers: attention to the forward roadway. The results indicate that novice drivers are much more willing to glance for long periods of time inside the vehicle than are experienced drivers. Interestingly, the results also indicate that both novice and experienced drivers spend equal amounts of time glancing at tasks external to the vehicle and in the periphery. Moreover, just as a program has been designed to train the scanning skills that clearly differentiate novice from experienced drivers, one might hope that a training program could be designed to improve the attention maintenance skills of novice drivers. We report on the initial piloting of just such a training program. Finally, we address a question that has long been debated in the literature: Do the results from driving simulators generalize to the real world? We argue that in the case of hazard anticipation, speed management, and attention maintenance the answer is yes.     

Bennett on Parts Twice Over

In this paper I outline the main features of Karen Bennett’s (Australasian Journal of Philosophy 1–21, 2011) non-classical mereology, and identify its methodological costs. I argue that Bennett’s mereology cannot account for the composition of structural universals because it cannot explain the mereological difference between isomeric universals, such as being butane and being isobutane. I consider responses, which come at costs to the view.     

Spiritual care in psychiatry: Professionals’ views

In this study we explored the views of Mental Health professionals and general practitioners (GPs) regarding spiritual care and the effect of personal and cultural background on their views. Data were collected through anonymous questionnaires posted to hospital nursing and medical staff at Hollins Park Hospital, Warrington, UK, and to all GPs within the hospital catchments area. Forty-five percent of GPs, 33% of psychiatrists, and 76% of nursing staff (p < 0.05) felt strongly that human beings are made up of spirit as well as body. More nurses felt that spiritual care is equally as important as other forms of care (52%) compared with psychiatrists (33%) and GPs (29%). A higher percentage of nursing than medical staff had previous training in this area and were more likely than medical staff to consider themselves appropriate to give spiritual advice. A total of 20% of GPs and 33% of psychiatric staff stated the need for training in this area and GPs especially felt they lacked time. Professionals’ views are influenced by cultural and religious backgrounds, with significantly more non-UK born respondents feeling strongly that human beings all have a spiritual component. Many doctors do not consider spiritual care has a role for them to be involved in and many feel too pressured in daily life to take this on. Nurses are more inclined to take a holistic approach to care in this respect. Some people with mental health problems have spiritual care needs and we should be aware of this as an important facet to therapy.     

Right and Wrong Reasons in Folk‐Psychological Explanation

Abstract

Davidson argued that the fact we can have a reason for acting, and yet not be the reason why we act, requires explanation of action in terms of the agent's reasons to be causal. The present paper agrees with Dickenson (Pacific Philosophical Quarterly, 2007) in taking this argument to be an inference to the best explanation. However, its target phenomenon is the very existence of a case in which an agent has more than one reason, but acts exclusively becaue of one reason. Folk psychology appears to allow for this phenomenon. However, appreciation of ‘rationalization’ as a form of contrastive explanation reveals the existence of the Davidsonian possibility to the problematic. Claims that ‘I did it because of R₁, not because of R₂’ are entertained in folk psychology, and may be sincere or insincere. But as reports of conscious practical reasoning, even when sincere, they are not authoritative about the mechanism of motivation.     

Conflict,Functional Disruption,and Defense-Effectiveness

The concepts of conflict and defense are clarified, and a model of defense-effectiveness is reconstructed from psychoanalytic usage. Defenses are effective if underlying conflicts are kept from becoming overtly disruptive. Thematic and associative indices of drive-conflict are compared with questionnaire measures of drive-related functional disruption. Three drives are sampled: aggression, dependency, and achievement. Only the first two yield positive findings. Although the aim of the study, internal consistency, is achieved, an hypothesis for external validation is also proposed.     

A Muscle Awareness Model for Changes in Rorschach Human Movement Responses

The present series of studies sought to provide evidence that M would increase under any conditions which make an S more aware of his muscles. The studies demonstrated that at least in women, M increased over a variety of conditions involving heightened muscle awareness. Specifically M increased in conditions utilizing muscle activation, deactivation, hypnosis, and focusing thoughts on the body musculature. The muscle awareness model unlike the sensory-tonic model accounts for increases in M following hyperactivity as well as inhibition.     

A Method for the Study of Personality Reactions in Preschool age Children by Means of Analysis of their Play

This investigation studied variability in visual thresholds for six subjects for 50 consecutive days. The results show the following:

1. Session-to-session variability agrees closely with the variability estimates made by Hecht and Zegers.

2. No periodic or cyclic trends appeared for the group or for any individual subject.

3. For all six subjects for the first 15 days of testing, a learning phenomenon was observed for the mean and standard-deviation data. There was a slow rise over the last 10 days of testing for the mean, but not for the standard-deviation data. (A discussion of the possible causes of the rise of the mean over the last 10 days suggested the influence of extraneous factors, such as boredom and fatigue.)

4. No effect of the menstrual cycle upon the threshold values was found.

4. No effect of the menstrual cycle upon the threshold values was found.     

Temporal Organization and the Initial Reproductive Tendency

Assessment of approach and avoidance aspects of affiliation motivation was reviewed. Ss were 60 white male university students. Split-half reliabilities were .71 and .60. Convergent and divergent aspects of validity were investigated in terms of self-report measures. Scales that correlated significantly with Affiliative Tendency converged meaningfully in terms of both contents and intercorrelations; those with nonsignificant correlations could also have been expected to diverge. For Sensitivity to Rejection, convergent and divergent patterns appeared but were less clear. The two scores were summed to obtain a Dependency score, which showed meaningful correlations, too. Affiliative Tendency increased with increasing ordinal position.