The relationship between speed of information processing and cognitive ability

Speed of information processing as measured by various reaction time and inspection tasks has been shown to correlate with psychometric intelligence, and it has been suggested that general intelligence (g) is determined to some degree by the speed that information is processed. If this is so, then various measures of speed of information processing should correlate substantially with each other, and each should also correlate with a wide range of psychometric tests that load on g. Alternatively, intelligence may be considered to be a multi-faceted complex of partially related abilities with specific abilities being dependent upon specific cognitive processes. If this is the case, it should be possible to discover independent cognitive processes, some of which correlate with one facet or broad ability and some with another. This paper presents three experiments in which the relationship between intellectual ability and four speed of information processing measures was examined. These were rate of memory scanning, rate of retrieval of information from long term memory, speed of stimulus-response mapping and inspection time (IT). Results showed that correlations between IT and most reaction time measures of speed of information processing were low, and that correlations between different versions of IT were negligible. In addition, some cognitive tasks with verbal material (memory scanning rate for digits and Posner letter matching IT) correlated most substantially with Verbal Reasoning whereas non-verbal (two-line) IT consistently correlated with tests loading on g. It was thus suggested that while non-verbal IT may be a measure of a perceptual speed attribute that contributes to mental functioning, other “speed of information processing” parameters may be more specific to a subset of abilities.     

Basic human values: The ethos for methodology

This paper draws on the personal experiences of part of a research project where the original methodology was flawed and needed to change to properly encompass the lives and experiences of the people who the research was for, namely users of mental health services living in supported housing. The change in methodology involved a recognition that the research could not be termed ‘value-free’; that researchers are not objective. It is argued that it was important to demonstrate that the information obtained in the research was ‘valid’, and that despite the subjective nature of the research, there are steps that can be taken to convince others that the information received is ‘real’. It is further argued that the traditional approach to research of separating theory (or knowledge) from practice was not only inappropriate in this sort of research, but is a false notion in any sort of action research that aims to promote change. The importance of the influence and power of service providers in action research is recognised, as well as the constraints placed on short-term funded projects. It was important for the methodology to be non-oppressive so that researchers adopted an open and honest approach and for researchers to become involved with the research participants. The implications of this ‘involvement’ are discussed. There is a concluding discussion about whether non-users of mental health services can be considered as allies in research. It is argued that all oppressed groups need their allies and if the research is led by basic human values, then working alongside people who depend on services can lead to emancipatory outcomes.     

BEHAVIORAL ASSESSMENT AND TREATMENT OF CHRONIC FOOD REFUSAL IN HANDICAPPED CHILDREN

In this study, we examined the eating behavior of four handicapped children, none of whom exhibited self-feeding skills. All children had a history of food refusal and were nutritionally at risk; one child received all nourishment by way of a gastrostomy tube. Baseline data taken during mealtimes indicated that all children accepted very little food, expelled food frequently, and engaged in a number of disruptive behaviors. Treatments consisted of one or more of the following contingent events: social praise, access to preferred foods, brief periods of toy play, and forced feeding. Results of multiple-baseline and reversal designs showed marked behavioral improvement for each child and increases in the amount of food consumed. Further improvements were noted at follow-up, which ranged from 7 to 30 months posttreatment.     

Developing the Individual: Life Skills and Family Therapy

Two bodies of literature on life skills and on family therapy have developed from different sources but have interesting similarities. Life skills comes from training and educational thinking, and concentrates upon the skills of and strategies for coping. Family therapy focuses upon the disturbance of an individual as symbolic of the dynamics of the family, but has at its roots a more-or-less explicit model of what constitutes an effective family, where the interactions can be readily understood in life-skill terms. The two approaches are compared and contrasted.     

Memory access: The effects of fact-oriented versus problem-oriented acquisition

This study examined the effects of similarity between the processing of acquisition and the processing of test materials on performance in a problem solving task. Previous work by Perfetto, Bransford, and Franks (1983) demonstrated that uninformed subjects’ failure to utilize relevant acquisition information in a later problem solving task is the result of a failure to spontaneously access such information. The present study demonstrated that spontaneous access can be enhanced when both acquisition and test materials are processed in a similar manner, that is, in a problem-oriented manner. Furthermore, the present findings indicate that the processing similarity leading to enhanced access is specific to particular acquisition and test items, rather than a general problem solving set induced at acquisition and the subsequent testing situation. Results are interpreted within a transfer-appropriate processing perspective.     

A comparison of the effects of child management and planned activities training in five parenting environments

This study compared the effects of two procedures designd to enhance the extratraining effects of behavioral parents training. Twenty parents of oppositianal children were randomly assign to either a child manangment training condition or a combined child management plus planned activity condition. A further 10 nonproblem children and their parents serve as a social validation group. Observation of both parents and children behavior were conducted in each of five home observation setting (breakfirst time, kindy (kindergarten) or school exit, a structured playtime, bathtime, and bedtime). Both training procedures result in change in both child oppositional and parents oversive behaviosr in all observation settings. In addition, desire positive parents behaviour also improve in all setting. Treatment effect were maintained in all setting at 3-month follow up. Composition between oppositional children following treatment and children in the social validation group showed that they each displayed similarly low lavels of oppositional behaviour in all settings. The inplecation of the results for faciliating generalised changes in behavioral parent training are discusssd.This study was supported by a grant from the National Health and Medical Research Council (NHMRC324 82 579049). We wish to thank all families, therapists, and observers who participated in the project.     

PSYCHOLOGY IN THE AUSTRALIAN CONTEXT*

Psychology formally entered the Australian arena via university departments of Philosophy, commencing last century and taking its initial direction largely from Britain. The previous pattern of development of Australian psychology was more distinctive than is its present state. Although the influences of Germany and the United States have supplemented that of the parent country, it is difficult to discern any locally blended colouration in the discipline or the profession as they now appear. Somewhat distanced from the universities, applied psychology has flourished especially in the public sector beginning with the initial close liaison formed between psychology and education in a developing colonial society. The public impact of research and practice is by no means as apparent as in the United States or Britain. After a burgeoning in the ‘sixties and early ‘seventies, the present state is one of limited growth concurrent with the general recession.