Concept learning and feature interpretation

Models of categorization often assume that people classify new instances directly on the basis of the presented, observable features. Recent research, however, has suggested that the coherence of a category may depend in part on more abstract features that can link together observable features that might otherwise seem to have little similarity. Thus, category learning may also involve the determination of the appropriate abstract features that underlie a category and link together the observable features. We show in four experiments that observable features of a category member are often interpreted as congruent with abstract features that are suggested by observable features of other highly available category members. Our discussion focuses on the implications of these findings for future research.     

Cleomedes (c. 1st century AD) on the celestial illusion, atmospheric enlargement, and size-distance invariance

Cleomedes (Kleomedes) is a little-known Greek author (c. 1st century AD) who produced what is probably the earliest extant statement of size-distance invariance. He supported the Stoic philosophy and was concerned to discredit the Epicurean position that we perceive objects as having their true size. He explained the celestial illusion (the apparent enlargement of the sun near the horizon) in two ways: partly as a refractive effect of the atmosphere similar to angular enlargement when looking into water; and partly as a linear enlargement due to increased apparent distance in a misty atmosphere. He is the earliest extant author to offer apparent distance as a clear explanation of the celestial illusion. He attributed these views to Posidonius (c. 135-50 BC). His explanations remained at the geometrical level, and he did not speculate on sensory mechanisms.     

Mean performance and the factor analysis of learning data

The difference in factor structure resulting from the factorization of correlations, covariances, and cross products is discussed. Factoring cross products has the advantage of retaining information on both means and variances; this method of factoring learning data is recommended. The conditions under which factoring covariances and cross products lead to the same essential structure are investigated.     

ORTHODOXY AND THE CHALLENGE OF BIBLICAL CRITICISM

Traditional Jewish theology and practice are predicated on belief in the divinity of the Torah. Biblical criticism has posed increasingly formidable challenges to this belief in modern times. To the extent that Modern Orthodoxy has addressed the problem, it has generally attempted to refute the findings of scientific scholarship on its own terms. This article will suggest that such an approach represents a misplaced framing of the question, by viewing all religious truth claims cognitively as simple statements of fact. Instead of questioning whether the doctrine of Torah from Heaven is true empirically, its “truth” is established via its function within the context of the “form of life” (in the Wittgensteinian sense) that it engenders.     

Examining Hardiness,Coping and Stress-Related Growth Following Sport Injury

This study aimed to explain how injured athletes high in hardiness experienced stress-related growth and why athletes low in hardiness are less likely to derive such benefits. Twenty participants were theoretically sampled into high (n = 10) and low (n = 10) hardiness groups. Semistructured interviews were used for data collection. Findings revealed that athletes high in hardiness experienced stress-related growth from having an emotional outlet, which enabled them to reframe their injury and experience positive affect. In contrast, athletes low in hardiness had no emotional outlet, which led to suboptimal outcomes. These findings have important implications for practitioners working with injured athletes.