An empirical investigation of adolescent suicidal ideation.

Four hundred nine high school students were surveyed to determine the percentage who had experienced suicidal ideation. The sample was then divided into high- and low-suicidal-risk groups. High-risk subjects were found to have significantly poorer quality friendships, lower self-esteem, and had experienced more life stress in the previous year.     

Olfactory aversion conditioning and overeating: a review and some data

The present study evaluated the efficacy of olfactory aversion conditioning in the management of overeating problems. 42 overweight female subjects were assigned to one of three treatment conditions: olfactory aversion therapy, attention placebo control, and no-contact control. One experimenter administered the 8-wk. treatment phase. The aversion therapy procedure entailed the pairing of selected target foods (CSs) with noxious odors (UCSs). There were 25 pairings of the CS and UCSs during each weekly session. Four noxious odors were employed, one each week, to prevent habituation to the UCS. The attention-placebo control procedure was identical except that "air" was substituted for the putative UCS of the aversion therapy condition. At the end of the treatment period the aversion therapy group had lost 4.7 lb.; the attention placebo controls had lost 3.6 lb. and the no-contact controls 0.5 lb. The difference between the aversion therapy group and the no-contact controls was significant and that between the attention placebo group and the no-contact controls approached significance. At a follow-up 8 wk. after the end of the treatment period the weights of all groups had risen to pretreatment levels and there were no differences between them. These results indicate that olfactory aversion therapy is not an efficient technique in promoting weight-loss.     

Selective adaptation of English consonants using real speech

Most English consonant-vowel (CV) syllables have other CV syllables embedded within them. For example, splicing sufficient energy from the onset of [k^ha] yields [p^ha], splicing into [ma] or [va] yields [ba], and splicing into [?a] yields [da]. We spliced successively longer segments from naturally spoken CV syllables to produce sequences of CV syllables which varied in discrete acoustic steps from [k^ha] to [p^ha], from [?a] to [da], from [ma] to [ba], from [fa] to [ba], and from [va] to [ba]. Random presentation of syllables in each series resulted in identification functions with typically sharp phoneme boundaries. For example, in the seven-syllable [?a]-[da] series (where [?a] was the original or first syllable), there were98% [?a] responses to Syllable 3, but only 12% [?a] responses (88% [da] responses) to Syllable 5. Following the identification test, subjects listened to 180 repetitions of either the first or last syllable in the test series, and were again required to identify randomly presented syllables from the test series. A shift in the phoneme boundary toward the repeated (adapting) syllable was observed for 11 of the 12 repeated syllables. Repeated presentation of [?a], for example, resulted in fewer [?a] responses to syllables in the [?a]-[da] series, compared to performance on the previous identification test. Likewise, repeated listening to [da] resulted in a decrease in [da] responses. Adaptation was selective in that syllables near the phoneme boundary were most affected by the adapting syllable. A shift in the phoneme boundary was also observed for two different continua when the adapting stimulus contained an acoustic feature identical to syllables in the test series. Thus, selective adaptation was found along a [ma]-[ba] continuum following repeated presentation of [na] and following repeated presentation of nasal resonance removed from its syllable context. A second major result, observed in five different experiments, was an asymmetrical adaptation effect. A greater shift in the phoneme boundary was observed following repeated presentation of the first syllable in each series (e.g., [?a]) than for the final embedded syllable (e.g., [da]). The results were discussed in terms of two different models of-selective adaptation.     

Distinctive feature control of decision time: Same-different judgments of simultaneously heard phonemes

Ss decided whether dichotically presented consonant or vowel phonemes were “same” or “different” in a reaction time (RT) task. Results indicated that “different” responses were made on the basis of a serial, self-terminating scan of distinctive feature differences between phonemes. “Same” responses were considered too fast to be accounted for by this process and were discussed as a separate parallel process. Recognition of dichotically presented syllables appears to involve a third process in which phonemes are also identified in terms of their distinctive features.     

When psychiatric patients interact with computer terminals: Problems and solutions

A computer system for on-line psychiatric patient assessment has been developed at the Veterans Administration Hospital in Salt Lake City. Unlike the typical on-line computer system designed for skilled terminal operators, this system is designed to interact with unskilled psychiatric patients. Special design considerations necessary to support this approach are discussed.     

Paralinguistic aspects of auditory comprehension in aphasia.

Eight severe aphasics were given sentences with either emotional or neutral content, presented once directly by the examiner and once via a tape recorder. Sentences with emotional content produced a greater number of responses than their neutral counterparts. Sentences spoken by the examiner also produced a significantly greater number of responses than the same items originating from a tape recorder. These results confirm the view that elements not related to the linguistic aspects of a message (and therefore referred to as paralinguistic) play a significant role in auditory comprehension.