Mental health and education: Counselling as prophylaxis

Though school counselling is concerned primarily with prevention rather than cure, in practice the urgent needs of the wayward and the sick leave little time for genuinely preventive work. Furthermore, effective prophylaxis in the strong sense of laying foundations of robust mental health, competence and well-being in all children must involve the whole school to some degree, and particularly a team of willing and able teachers working along with the school counsellor on curriculum development in personal and social education. Though the needs of the few can be met by one-to-one counselling, the needs of the many will be answered only through group work. Trained counsellors must take the initiative in such work. They will retard the mental health movement if they permit their colleagues to feel complacently that the appointment of a school counsellor is an ample school contribution to the objectives of preventive psychiatry. Mental health is every teacher's business.     

Electrical aversion therapy with alcoholics: An analogue study

Chronic alcoholic patients matched on age, education and length of problem drinking were assigned to one of three treatment conditions, with 10 subjects in each group: (1) Electrical Aversion Conditioning (high shock paired with alcohol sips); (2) Control Conditioning (very low shock paired with alcohol sips); and (3) Group Therapy (confrontation psychotherapy). Groups 2 and 3 were included to control for possible ‘attention-placebo’ and expectancy factors involved in the conditioning procedures. Subjects in each group were given instructions designed to produce high expectancy for therapeutic success. Pre-post measures of alcohol consumption and attitudes toward alcohol were obtained using an analogue ‘taste test’ assessment procedure. No statistically significant differences in reduced alcohol consumption or attitudes toward alcohol were found among the groups. Trends in the data support the contention that effects of electrical aversion may be more related to such factors as therapeutic instructions, expectancy, specificity of the procedure or experimental demand characteristics than to conditioning factors.     

Interval representations for interval orders and semiorders

This paper discusses two types of real interval representations for interval orders and semiorders ? on a set X of arbitrary cardinality. In each type, each x in X is mapped into a real interval F(x). The first model is: x ? y iff a < b for all a in F(x) and all b in F(y). The second is: x ? y iff sup F(x) < infF(y). Necessary and sufficient countability conditions are presented for the second model for interval orders and for semiorders; simpler sets of these conditions are shown to be sufficient for the first model. Some special properties for the representations are noted, including two monotonicity properties for the semiorder representation.     

Verbal retention after shadowing and after listening

Ss shadowed or listened to stories that had been recorded at 1 word/sec (wps), 2 wps, and 3 wps. They then took tests of word recognition, semantic retention, and syntax recognition. At the slowest rate, shadowers’ word recognition and semantic retention were somewhat higher than listeners’ scores, but this difference disappeared at faster rates. Significant positive correlations among all three retention scores were observed for listeners, but for shadowers word recognition was unrelated to either of the other two retention measures. The results are discussed in terms of monitoring during shadowing. Implications for experiments on selective attention are considered.     

On the measurement of reinforcement frequency in the study of preference

In a two-link, concurrent-chain schedule, pigeons' pecks on each key during the initial link occasionally produced a terminal link, during which only that key was operative. Responses in the terminal link were reinforced with food on either fixed-interval or variable-interval schedules. In one experiment, relative amount of responding in the initial link equaled the relative harmonic rate of reinforcement in the terminal links. In a second experiment, the selection of interreinforcement intervals in variable-interval schedules in the terminal links was such that rates of reinforcement based on the harmonic or on the arithmetic means of the interreinforcement intervals predicted opposite preferences in the initial links. The observed preference was consistent with that predicted by the harmonic rather than by the arithmetic rates of reinforcement.     

The interaction of veracity and syntax in the processing of sentences1

The reaction times of 80 Ss in judging sentences true or false with respect to pictures were analyzed, and it was noted (a) that true sentences containing an expected surface structure required less time than false sentences of the same structure, (b) that latencies to true sentences containing an unexpected surface structure were longer than latencies to the same sentences when their structure was identical to that of previous sentences, and (c) that transitive-verb constructions appeared easier to judge than predicate nominatives of the same length.     

Statistical methods for absorbing Markov-chain models for learning: Estimation and identification

General algorithms for computing the likelihood of any sequence generated by an absorbing Markov-chain are described. These algorithms enable an investigator to compute maximum likelihood estimates of parameters using unconstrained optimization techniques. The problem of parameter identifiability is reformulated into questions concerning the behavior of the likelihood function in the neighborhood of an extremum. An alternative characterization of the concept of identifiability is proposed. A procedure is developed for deciding whether or not this definition is satisfied.This research was undertaken within the Institute for the Study of Intellectual Behavior, University of Colorado, and is Publication No. 42 of the Institute. The work was supported by NSF Grant GB-34077X. The logic underlying Algorithm I was suggested by Clint Schumacher.