The purpose of this paper is to analyze the components of clinical inference within the framework of Brunswik's lens model by means of multiple-regression analysis. 2 parallel studies of clinical psychologists, the performance of Ss in a quasi-clinical task, and the performance of Ss learning a multiple-cue probability task involving neutral stimuli provide the context for the analysis. Special reference is made to the problem of clinical vs. statistical prediction. Implications for the interrelation between experimental psychology, cognitive theory, and clinical tests are discussed.Two sharply contrasting attitudes toward the psychology of inference may be observed within psychology. On the one hand, clinical psychologists behave as if there were virtually no limit to their capacity for inference making. Indeed, the general assumption, only slightly tarnished, is-the more data on which to base the inference, the better the inference is likely to be. On the other hand, experimental psychologists, particularly learning theorists, appear to believe that man's capacity for inference making is hardly more than a brief step removed from none at all. Where the truth lies, however, may be learned from the inferential behavior

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The recent European literature on surgical castration in treatment of sex offenders is reviewed. Results are reported of the most important empirical studies conducted in this field of sex research in Germany, Switzerland, Norway, and Denmark. Methodological problems of follow-up studies on castrates as well as the subject of castration as treatment for sex offenders as a whole are discussed. The main conclusion is that there is no scientific or ethical basis for castration in the treatment of sex offenders.

Emotional disturbance during pregnancy and the postpartum period is very common and at times leads to serious psychotic reactions. Studies comparing the relative frequency of psychotic breakdown in women during pregnancy or postpartum, or at other times, indicate that there is a greater frequency of psychotic reaction in the postpartum period (Pugh et al., 1963; Ryle, 1961; Tobin, 1957; Strecker and Ebaugh, 1926; Richardson and Guttmacher, 1967).

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ExtractComparisons of three groups of normal subjects between the ages of 8 and 31 years, all of whom were studied under similar conditions, revealed certain common sleep characteristics. During the second and third decades of life, normal sleep is characterized by a concentration of stage 4 during the first third of the night and of stage 1-REM during the last third; and, during the first part of the night, by a progression from wakefulness down through stage 4. Percentages of stages 0, 1, 1-REM, and 3 do not differ significantly among age groups. There are, however, a significant increase in stage 2 and a significant decrease in stage 4 between the ages of 15 and 20 years.

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