Suicide by Industry and Occupation: A Structural-Change Approach

ABSTRACT: Data on suicide rates for males age 20 to 64 by occupation and industry for 1950 are examined. Two hypotheses are tested: The first, a static hypothesis relating variations in suicide with the size of the group from which choice of significant others is made, was not supported. The second, in which variations in suicide are related to changes in the size of the group from which significant others are selected, is supported. The authors conclude that their structural change approach to suicide is compatible with both sociological and psychological approaches to suicide.     

The use of small filament lamps as visual stimuli

The purpose of this note is to draw attention to the fact that the time needed for small filament lamps to reach full brightness is dependent upon the time for which they have been previously switched off. This dependence is a possible source of error in biassed choice reaction sequences, and a circuit is given which avoids the difficulty.