Classification of exemplars with single- and multiple-feature manifestations: the effects of relevant dimension variation and category structure

Most classification research focuses on cases in which each abstract feature has the same surface manifestation whenever it is presented. Previous research finds that people have difficulty learning to classify when each abstract feature has multiple surface manifestations. These studies created multiple manifestations by varying aspects of the stimuli irrelevant to the abstract feature dimension. In this article, multiple manifestations were created by varying aspects of the stimuli relevant to the abstract feature dimension. People given categories with the family resemblance category structure often used in psychology experiments had difficulty learning to classify when multiple manifestations were present, even though the variation was relevant. This effect was reversed when a family resemblance structure with nondiagnostic values was used.     

Category use and category learning

Categorization models based on laboratory research focus on a narrower range of explanatory constructs than appears necessary for explaining the structure of natural categories. This mismatch is caused by the reliance on classification as the basis of laboratory studies. Category representations are formed in the process of interacting with category members. Thus, laboratory studies must explore a range of category uses. The authors review the effects of a variety of category uses on category learning. First, there is an extensive discussion contrasting classification with a predictive inference task that is formally equivalent to classification but leads to a very different pattern of learning. Then, research on the effects of problem solving, communication, and combining inference and classification is reviewed.     

Confusions of self with close others

This article explores the cognitive underpinnings of interpersonal closeness in the theoretical context of "including other in the self" and, specifically, the notion of overlap between cognitive representations of self and close others. In each of three studies, participants first rated different traits for self, close others (e.g., romantic partner, best friend), and less close others (e.g., media personalities), followed by a surprise source recognition task (who was each trait rated for?). As predicted, in each study, there were more source confusions between traits rated for self and close others (e.g., a trait rated for self recalled as having been rated for the close other) than between self (or close others) and non-close others. Furthermore, several results suggest that the greater confusions between self and close others are due specifically to interpersonal closeness and not to greater familiarity or similarity with close others     

Functional anatomy of the null hypothesis and of tests of it

The author compared simulations of the "true" null hypothesis (zeta) test, in which sigma was known and fixed, with the t test, in which s, an estimate of sigma, was calculated from the sample because the t test was used to emulate the "true" test. The true null hypothesis test bears exclusively on calculating the probability that a sample distance (mean) is larger than a specified value. The results showed that the value of t was sensitive to sampling fluctuations in both distance and standard error. Large values of t reflect small standard errors when n is small. The value of t achieves sensitivity primarily to distance only when the sample sizes are large. One cannot make a definitive statement about the probability or "significance" of a distance solely on the basis of the value of t.     

Opportunities of online analysis1

The question of whether tele-analysis is an acceptable way of conducting analysis has been discussed since it has become available. Merchant (2016) and others concluded that ‘the essentials of a genuine analytic process are not necessarily precluded’ (p. 1). In this paper, the author goes a step further and examines potential advantages of tele-analysis. There may be benefits for patients with a history of physical or sexual abuse who value the distance. The potential for a ‘safe place’ for work with erotic transference is also examined. In a further section the author is interested in allowing the analyst the freedom to practise in an authentic way, congruent with their personality. Also explored is the concept of the interactive field including the technological medium, which is subject to synchronistic events. Finally, the author gives examples of a deep connection between patient and analyst which came about despite the physical distance.     

Sexual Pavlovian conditioned approach behavior in male Japanese quail (Coturnix coturnix japonica)

A localized visual stimulus presented immediately prior to access to a female conspecific stimulated approach behavior in male Japanese quail after several conditioning trials. Development of this conditioned approach behavior was observed with two different types of signal lights, 10-s and 30-s signal durations, large and small experimental chambers, and with male birds housed continually in the conditioning chambers or only placed in the chamber for brief daily sessions. Conditioning also resulted in shorter latencies to initiate copulation in males given access to a female following the signal light, in comparison with males that received access to a female unannounced by the light. Although some aspects of the conditioning experience were retained over a 6-week interval, some loss of the behavior was also observed. The conditioned behavior also decreased with repeated extinction trials, during which the signal light was presented in the absence of access to a female conspecific. The results are discussed in relation to other aspects of the social behavior of Japanese quail and other studies of sexual conditioning.     

Perceived social support from family and friends: measurement across disparate samples

This research investigates the psychometric properties of the Perceived Social Support (PSS; Procidano & Heller, 1983) from family and friends across three samples: a chronic-psychiatric sample, a diabetic sample, and an undergraduate college student sample. Comparisons of internal consistency, central tendency, and dispersion for both the perceived family support (PSS-FA) and the perceived friend support (PSS-FR) are reported, as are the relationships between these two scales for each group. Correlations with general health status and psychiatric symptomatology are also reported. The utility of this measure for generalizable research on social support is discussed.