An instrumental cigarette smoke monitor designed for the direct measurement of smoke particulate matter generated in human smoking studies

An instrumental cigarette smoke monitor (CSM) system designed for human smoking studies has been developed and validated using a smoking machine as a human surrogate. The cigarette holder contains both smoke-mixing and flow-measurement orifices and a smoke-concentration sensor. Smoke flow through the holder and smoke concentration in the holder are determined simultaneously. The two signals are multiplied electronically and the product signal integrated. The integrated response is directly proportional to the amount of particulate matter collected immediately downstream of the holder, regardless of cigarette type or the particular way in which the cigarette is smoked. The CSM is sufficiently sensitive to quantitatively determine the amount of smoke TPM generated from cigarettes in the 1-mg Federal Trade Commission tar-delivery category.     

Is Student Counselling a Profession?

Moves towards professionalisation within student counselling are discussed as a case-study which may have wider applicability within counselling as a whole. The main approaches to defining a profession are described, and eight criteria are distinguished and applied to student counselling. It is concluded that student counsellors are some way from the 'ideal-type' profession. Account also needs to be taken, how ever, of moves towards some forms of deprofessionalisation' within the traditional professions. Current moves towards accreditation of individuals and courses within the Association for Student Counselling are welcomed.     

Stimulus intensity control and personality: A research note

Previous research has suggested that variations in augmenting-reducing, extraversion, and sensation seeking might be explained in terms of a common stimulus intensity control mechanism. However, empirical tests of this hypothesized relationship have produced equivocal findings. The present study attempts to clarify the issue by analyzing scores for extraversion, sensation seeking, and both cortical and questionnaire measures of augmenting-reducing obtained from the same sample of subjects. Apart from a significant positive correlation between the questionnaire index of reducing and sensation seeking, which have not previously been investigated, the results show no evidence of a systematic relationship among the variables.     

Effects of information presentation mode on subjects' hypotheses in a probabilistic inference task

The effects of two modes of information-presentation (visual access to an ordered array of cue values vs. no access) on subjects' performance in a two-cue probability learning (MPL) task were investigated.The results showed that the visual access to an ordered array of cue values led to a larger proportion of correct hypotheses and of optimal selection strategies and to a better learning performance. These results were interpreted as supporting the conjecture that the situational variables may affect the subject's hypotheses about the cue-criterion relations. The results were also discussed with respect to their implications for the theory of MPL.     

Prolonging the effects of deposit contracts with smokers

Three group-comparison studies are reported which investigate possible ways of prolonging the effectiveness and increasing the acceptability of deposit contracts with smokers. In Experiment 1 deposits held for a total of 4 months were compared with those lasting 2 months. In Experiment 2 a ‘reinforcement thinning’ procedure in which the intervals between deposit repayments are progressively increased was compared with contracts involving equal intervals between repayments. In Experiment 3 the effects on compliance, drop-out rates and treatment outcome of a cumulative-deposit procedure were studied. Subjects in this condition were asked to supply a deposit in 4 weekly instalments rather than as a lump sum. The results of Experiments 1 and 2 were disappointing. There were no significant differences between treatments, although there was a trend in favour of ‘thinning’ deposits. Experiment 3, however, showed that the cumulative-deposit procedure was effective in influencing more subjects to provide deposits. Neither drop-out rate nor treatment outcome was adversely affected. It is difficult for a straightforward reinforcement model to account for these results. Other models are discussed, and ways of testing them suggested. A larger study is still needed to determine whether certain deposit-contract procedures can add to the long-term effectiveness of behavioural-package programmes for stopping smoking.     

‘What do you mean by depression?’—A study of the relationship between antidepressive activity and personal concepts of depression

This study explores the relationship between a subject's concept of depression and his reported antidepressive activities. A pilot study is reported which was used to develop a method of classification of subjects' concepts of depression in terms of depth of depression and degree of external causality perceived. The majority of the subjects studied fitted into a group who see depression as a major disturbance of mood unrelated to external events; this was true for both the pilot and main studies. The main study applied the depressive classification method to an investigation of the relationship between depressive concept group and qualitative and quantitative aspects of reported repertoires for coping with depression. A major concept of depression was shown to be associated with a high frequency of reported antidepressive activity, but ANOVAR revealed no other significant main effect on quantitative analysis. Various complex interactions of sex. depth of concept and locus of concept were observed. A group of psychiatric inpatients were seen to differ in quantitative and qualitative aspects of reported antidepressive behaviour from the remainder of the population studied; the implications of these findings for further research are discussed.     

The psychological causality implicit in language

We are concerned with the causality implicit in English verbs that name interactions, either mental or behavioral, between two persons, verbs such as like, notice (mental), and help, cheat (behavioral) in such a context as Ted—Paul. Using four different methods, we show that adult native speakers think of causality in such verbs as unequally apportioned between interactants. For behavioral (or action) verbs greater causal weight is given to the Agent argument of the verb (e.g., Ted in Ted helps Paul) than to the Patient argument (Paul). For mental (or state) verbs greater causal weight is given to the Stimulus argument of the verb (e.g., Paul in Ted likes Paul) than to the Experiencer argument (Ted). For English verbs of the type studied, derivational adjectives often exist (e.g., helpful, cheating, likable, noticeable). Such adjectives are attributive to one or the other argument of the verb base (Agent or Patient; Stimulus or Experiencer). We show that the direction of causal attribution in the adjective (e.g., helpful is attributive to Ted the Agent; likable is attributive to Paul the Stimulus) predicts the primary causal weightings assigned in our experimental tasks. We also show that in the English language adjectives derived from action verbs are almost attributive to the Agent and adjectives derived from state verbs to the Stimulus. Because certain facts about English morphology predict certain ways of thinking about causality, our main finding may seem to be a Whorfian one, a demonstration that language affects thought. However, we argue that it is not that but rather a demonstration that two modes of thought (the Agent-Patient Schema and the Stimulus-Experiencer Schema) affect language use. We suggest that the schemas are universals of human thought.     

Waking ultradian rhythms of performance and motility in hyperkinetic and normal children

Waking ultradian rhythms in a visual performance task (detections and false positives) and in motility (global body movements and segmental limb movements during the task, and segmental limb movements during off-task periods) were examined in groups of nonmedicated hyperkinetic (HK) children (N = 11) and matched normal controls (N = 11). Testing was conducted for 5 minutes every 15 minutes (with 10-minute "rest periods") over a 6-hour period on 2 consecutive days. Increased limb movement (p less than .01) during off-task periods on both days. Increased limb movement in HK subjects during the task was marginally significant (p less than .06) on one day. False positives and global body movements failed to differentiate the groups. With regard to ultradian rhythmicity, some subjects in both groups showed evident ultradian peaks, which were present across a wide range of frequencies in one or more variables. There were no significant differences in the incidence of the period of evident ultradian peaks between the two groups.