Goals, Constraints and Occupational Choice: The First Twelve Months in the Belfast Labour Market

A central assumption of occupational-choice theory—that young people enter the labour market with initially unrealistic occupational goals which are eventually modified by their subsequent experience of the market, changing from less to more realistic—is critically examined on the basis of data deriving from detailed interviews with 34 school-leavers between May 1978 and June 1979. Two conclusions emerge. Firstly, when one examines the occupational knowledge and experience of the working class and their own perceptions of the careers of their peers and elders, there is no reason why their goals should be described as 'unrealistic'. Secondly, although the time-scale of the data is limited, there is evidence that some school-leavers may eventually adjust their occupational horizons downwards. Equally important, however, is the evidence that some school-leavers may refuse to do this.     

Perception of dynamic information for vowels in syllable onsets and offsets.

It has been demonstrated using the "silent-center" (SC) syllable paradigm that there is sufficient information in syllable onsets and offsets, taken together, to support accurate identification of vowels spoken in both citation-form syllables and syllables spoken in sentence context. Using edited natural speech stimuli, the present study examined the identification of American English vowels when increasing amounts of syllable onsets alone or syllable offsets alone were presented in their original sentence context. The stimuli were /d/-vowel-/d/ syllables spoken in a short carrier sentence by a male speaker. Listeners attempted to identify the vowels in experimental conditions that differed in the number of pitch periods presented and whether the pitch periods were from syllable onsets or syllable offsets. In general, syllable onsets were more informative than syllable offsets, although neither onsets nor offsets alone specified vowel identity as well as onsets and offsets together (SC syllables). Vowels differed widely in ease of identification; the diphthongized long vowels /e/, /ae/, /o/ were especially difficult to identify from syllable offsets. Identification of vowels as "front" or "back" was accurate, even from short samples of the syllable; however, vowel "height" was quite difficult to determine, again, especially from syllable offsets. The results emphasize the perceptual importance of time-varying acoustic parameters, which are the direct consequence of the articulatory dynamics involved in producing syllables.     

Client or patient? Contrasts between medical and counselling models of confidentiality

Conflicts can arise within counseling in primary care settings over issues of client confidentiality as perceived from a therapeutic as opposed to medical perspective. ‘Ideal types’ of counseling confidentiality and medical confidentiality are compared, according to a proposed structural model of confidentiality. In contrast with a therapeutic concept of confidentiality as an interpersonal contract between client and counsellor, a structural model of confidentiality appropriate to medical and primary care settings would include reference to crucial aspects such as risk assessment, and the sharing of client information within a multi-disciplinary team. The client-centred counselling model of confidentiality is then explored with reference to the Derbyshire Inquiry Report on the mental health care provided for a client with psychiatric problems. The limitations of adopting an exclusive client-centred counselling approach towards confidentiality in primary care settings are noted, given the requirements of the Care Programme Approach for effective risk assessment and inter-professional liaison in the care of client and patients with psychiatric problems. The potential resultant issues of counsellor and general practitioner liability are identified in relation to complaints systems and the key legal concept of vicarious liability.     

An effect of linguistic experience: The discrimination of [r] and [l] by native speakers of Japanese and English

To test the effect of linguistic experience on the perception of a cue that is known to be effective in distinguishing between [r] and [l] in English, 21 Japanese and 39 American adults were tested on discrimination of a set of synthetic speech-like stimuli. The 13 “speech” stimuli in this set varied in the initial stationary frequency of the third formant (F3) and its subsequent transition into the vowel over a range sufficient to produce the perception of [r a] and [l a] for American subjects and to produce [r a] (which is not in phonemic contrast to [l a ]) for Japanese subjects. Discrimination tests of a comparable set of stimuli consisting of the isolated F3 components provided a “nonspeech” control. For Americans, the discrimination of the speech stimuli was nearly categorical, i.e., comparison pairs which were identified as different phonemes were discriminated with high accuracy, while pairs which were identified as the same phoneme were discriminated relatively poorly. In comparison, discrimination of speech stimuli by Japanese subjects was only slightly better than chance for all comparison pairs. Performance on nonspeech stimuli, however, was virtually identical for Japanese and American subjects; both groups showed highly accurate discrimination of all comparison pairs. These results suggest that the effect of linguistic experience is specific to perception in the “speech mode.”     

Memory for lateral orientation of slides in picture stories

Three picture stories were constructed by taking slides of people involved in three different activities. Two sequences of these slides were presented. Subjects were asked whether or not each slide in the second sequence was in the same lateral orientation as in the first sequence. Experiment 1 presented the slides in correct or random sequence and in correct or random lateral orientation (2 by 2 design). The two groups who received correct orientation excelled in recognition of orientation in the test series. Experiment 2 replicated the random orientation condition, found that pre-warning of the recognition task had no effect on performance, and suggested that these subjects did not make use of the events in determining laterality. Experiment 3 replicated the correct order and orientation condition and further revealed that new but appropriate slides in the test series were accurately judged as to lateral orientation which fit the context of the original stories.     

Capacity limits for face processing

We present three experiments in which subjects were asked to make speeded sex judgements (Experiment 1) or semantic judgements (Experiments 2 and 3) to face targets and nonface items, while ignoring a solitary flanking distractor face or a nonface stimulus. Distractors could be either congruent (same response category) or incongruent (different response category) with the target. Distractor congruency effects were consistently observed in all combinations of target-distractor stimulus pairs, except when a distractor face flanked a target face. The failure to find congruency effects in this condition was explored further in a fourth experiment, in which four task-irrelevant flankers were simultaneously presented. Once again, no face-face congruency effects were found, even though comparison distractors interfered with face and nonface targets alike. However, four simultaneously presented distractor faces did not interfere with nonface targets either. We suggest that these experiments demonstrate a capacity limit for visual processing in these conditions, such that no more than one face is processed at a time.     

Robust representations for face recognition: the power of averages

We are able to recognise familiar faces easily across large variations in image quality, though our ability to match unfamiliar faces is strikingly poor. Here we ask how the representation of a face changes as we become familiar with it. We use a simple image-averaging technique to derive abstract representations of known faces. Using Principal Components Analysis, we show that computational systems based on these averages consistently outperform systems based on collections of instances. Furthermore, the quality of the average improves as more images are used to derive it. These simulations are carried out with famous faces, over which we had no control of superficial image characteristics. We then present data from three experiments demonstrating that image averaging can also improve recognition by human observers. Finally, we describe how PCA on image averages appears to preserve identity-specific face information, while eliminating non-diagnostic pictorial information. We therefore suggest that this is a good candidate for a robust face representation.     

HIV Locus of Control and Adaptation to Seropositivity1

The role of HIV locus of control in adaptation to HIV disease was evaluated in a sample of 588 military medical beneficiaries with predominantly asymptomatic, early stage HIV infection. Cluster analysis yielded 4 configurations of HIV locus of control, with high levels of depression related to a cluster where internal and powerful others control were highly endorsed. External attributions of control generally appeared more adaptive. Results are discussed in relation to Rotter's social learning theory and its implications for adaptive aspects of locus of control.