A constant-current shock source for providing direct or alternating current output

A vacuum-tube constant-current shock source. providing ac, smooth dc, and pulsating dc output is described. In addition to output flexibility. the shock source is compact, inexpensive to construct. and has undergone 4 years of testing and laboratory use. Operating instructions, theory of operation, and suggested modifications are included along with performance specifications.     

Adolescent girls in distress: a high-risk intersection

Adolescent girls in distress are at high risk due to their location at the intersection of three populations at risk: adolescents, females, and those in social distress. The first part of this article specifies the parameters of the population in terms of behavioral and personality features, based on empirical research in Israel as well as the United States. The second part discusses the main characteristics of each of the three populations, with special emphasis on the components of transition in each. The third part develops an integrative theoretical model that illustrates the uniqueness of this group and its problems, and that may serve as a basis for the development of diagnostic and treatment tools for helping these girls. In this model, the profiles of adolescents in general, adolescent boys, adolescent girls, and adolescent girls in distress are compared. The comparison is made in terms of physical, cognitive, social, and emotional development, interpersonal relationships, and status in the family. Comparison of the profiles reveals that adolescent girls in distress are located at the extreme end of the spectrum of the six developmental areas. Implications of the findings are discussed in terms of the inconsistency between messages on various levels: explicit versus implicit; intrafamilial versus social; and expectation versus opportunity. It is concluded that the specific needs of this group require the establishment of an appropriate policy as well as a variety of strategies, including nonconventional techniques, for creating a multidimensional intervention program.     

Experimental analysis of pedophilia

It was hypothesized that the population of pedophiles differs from that of males who prefer physically mature partners, in respect of the proportion of bisexual members in each group. Bisexuality was assessed by means of a verbal scale and by recording penile volume changes during the presentation of movie clips of nude males and females. Results supported the hypothesis.An earlier finding of a difference between pedophiles and males who prefer physically mature partners, in respect to feminine gender identity, was retested using the Feminine Gender Identity Scale (for males). It could be confirmed only for homosexual males and therefore cannot be accepted as a general difference between pedophiles and persons who prefer physically mature partners.     

Need for achievement,career mobility,and the Mexican-American college graduate

Need for achievement and career mobility were measured for 111 Mexican-American college graduates. Those with a moderate need for achievement were found to have the highest upward mobility. Those with either a high or low need for achievement had lower mobility. The implications of this finding are discussed.     

Long-delay taste aversion learning in an unpoisoned rat: Exposure to a poisoned rat as the unconditioned stimulus

M. J. Lavin, B. Freise, and S. Coombes (Behavioral and Neural Biology, 1980, 28, 15–33) have shown that if two rats consume a flavored solution and one is poisoned, the unpoisoned partner will also exhibit a flavor aversion during a later preference test. Experiments 1 and 2 showed that a sufficient condition for obtaining this aversion is that the poisoned partner be present with the unpoisoned rat after it has consumed the flavored solution. It is not necessary that the poisoned partner be present when the flavored solution is consumed or indeed have had any exposure to the flavored solution. Experiment 3 showed that the unpoisoned partner can exhibit a flavor aversion when there is a temporal gap of as long as 6 hr between consumption of the flavored solution and exposure to the poisoned rat.     

Analyzing mothers' speech to young autistic children: A methodological study

The development of a technique for analyzing mothers' speech to young children is described. The need for such a measure arose from two linked studies of autistic children, one comparing them with developmental dysphasic children and the other evaluating the results of a home-based approach to treatment. A 17-category system was developed which could encompass almost all the types of speech shown by mothers of young autistic and normal children and which differentiated between the speech used by different mothers in a way that was meaningfully related to the child's level of language development. The categories proved to be easily applicable and to show good inter-observer reliability. Tape-recordings made during home observations were found to be the best source of speech samples. The problems of time sampling, length and nature of speech sample, and observer effects are discussed.We are most grateful to our colleagues Dr. Lionel Hersov and Mr. William Yule for many helpful suggestions in developing the measures and for their comments on an earlier draft of the paper. The study is supported by a grant from the (British) Department of Health and Social Security.