Developmental reversal in classification accuracy due to an increase with age in orientation-free judgments.

A complete developmental reversal in accuracy was obtained in Experiment I in which third graders, sixth graders, and adults judged the class membership of patterns presented in a same-different task. An examination of the task requirements and pattern classes employed led to the hypothesis that the reversal in accuracy resulted from an increase with age in orientation-free judgments. The results of Experiment II, in which adults were told to not rotate the patterns, and Experiment III, which was a replication of Experiment I using symmetric rather than areally skewed pattern classes, provided confirmation for that hypothesis.     

Ethical dimensions of group leadership

In Conclusion This article has attempted to identify some of the basic life values that can provide guidelines for the ethically responsible group leader. The value guidelines have support in both psychological and religious knowledge. Such values put the leadership of groups in a frame of reference that indicates that growth of persons, freedom of will, use of man's mind, meaningful fellowship, and the importance of the individual are the dynamic dimensions of qualitative group functioning in today's organization.     

Subitizing and similarity: Toward a pattern-matching theory of enumeration

Pattern-matching theories of subitizing claim that subjects enumerate displays with small numerosities by retrieving numerical responses associated with similar displays experienced in the past. Such retrieval implies that displays with small numerosities are similar to other displays of the same numerosity and dissimilar to other displays of different numerosities. These hypotheses were tested by having subjects rate the similarities of displays of dot patterns with numerosities in the range of 1-10. One group of subjects rated patterns of the same numerosity. Their ratings were higher for patterns in the subitizing range (numerosities of 1-3) than for patterns beyond the subitizing range (numerosities of 4-10). Another group rated patterns of different numerosities. Their ratings were lower in the subitizing range than beyond the subitizing range. An analysis based on multidimensional scaling suggested that numerosity could be retrieved accurately for displays of 1-3 dots, but not for displays of 4-10 dots.     

Projectivist utilitarianism and the satisfaction of desire

N. M. L. Nathan's argument that IDP utilitarianism, if universally adopted, is inconsistent, does not succeed. The argument requires that if an IDP utilitarian has only self-regarding desires, then none of these desires can be informed. This rests on a partial misuse of the expression satisfaction of desire. For an individual attempting to realize his self-regarding desires, the satisfaction of the satisfaction of a desire is unmeaning. The naming of an object of the desire is an intrinsic part of the phrase satisfaction of desire. Further, contrary to Nathan's claim, this suggestion does not trivialize IDP utilitarianism.