Cross language learning disabilities and verbal versus spatial memory

The research reported in this talk involves comparisons of verbal and spatial memory tasks across groups of children (and adults) with different types of learning difficulties. The research focuses on children with literacy acquisition problems and investigates whether such problems are related to specific areas of deficit. In the first piece of research, children with dyslexia (literacy learning problems) and dyspraxia (motor deficits) were contrasted on measures of memory (for example, tasks that required the retention of sequences of verbal material or spatial movements) and additional measures of literacy (reading and spelling), phonological (awareness of sounds within words) and motor (fine and gross motor tasks) functioning. The data were consistent with a dissociation between tasks/groups such that dyslexics showed weak phonological processing but intact visuo-spatial processing, whereas children with dyspraxia showed weaknesses on task involving visuo-spatial information, but average levels of performance on tasks that required phonological processing. Similar results were identified amongst adult groups, consistent with a deviant level of functioning rather than a developmental delay. A second line of research contrasted children with or without literacy problems across language backgrounds (English, Arabic, Chinese and bilingual children). Consistent with the dyslexia data, children with poor English literacy skills showed weaknesses in verbal/phonological memory tasks but not in visuo-spatial memory. However, for Chinese-language children, visuo-spatial memory differed between good and poor literacy learners, but there was little evidence for verbal memory differences. In contrast, the Arabic and bilingual children showed differences in both verbal and visuo-spatial areas, although the evidence was consistent with enhanced visual/spatial skills amongst the good literacy groups, rather than poor literacy children showing weaknesses in those tasks. These data suggest that the influence of memory skills on learning may vary with the language of instruction. A final line of enquiry considers whether teaching strategies to children with learning difficulties may overcome some of the identified memory deficits and lead to better levels of learning. English language children with learning difficulties were taught visual and verbal strategies to support retention of materials in short-term memory tasks. In the majority of cases, learning was improved when it focused on visuo-spatial strategies but not when verbal strategies were used. These data support the relationship between learning difficulties and different aspects of short-term memory that may lead to poor levels of learning. It also presents evidence that memory (particularly those related to visuo-spatial) processes are influenced by the context within which learning is taking place, both in terms of the language of instruction and the strategies used to support learning. For some children with educational difficulties based around language-related deficits, visuo-spatial strategies may support acquisition.     

ARGUMENTS FROM CONCEIVABILITY1

What can be inferred from the fact that something is, or is not, conceivable? In this paper I argue, contrary to some deflationary remarks in recent literature, that arguments which use such facts as their starting point may have significant philosophical import. I use Strawson's results from the first chapter of Individuals in order to show that Galileo's arguments in favour of the distinction between primary and secondary qualities, which are based on premises concerning conceivability, should not be dismissed: they are the first step towards recognising an important conceptual truth.     

The homogeneity assumption in differential prediction analysis: does it really matter?

In simulation studies, the F test for differences in regression slopes has tended to distort nominal Type I and II error rates when the 2 subgroup error variances exceeded a 1.50:1 ratio. This study examines the frequency and extent that this ratio is violated within data sets relevant to applied psychology. The General Aptitude Test Battery (GATB) validity study database contained ability data and overall job performance ratings. The Project A military database contained both ability and personality data, along with job performance factor scores and an overall job performance rating. Results suggest that subgroup (White-Black, male-female) error variances are often homogeneous enough to support F test results from past empirical work. Enough heterogeneity was found, however, to urge applied psychologists investigating differential prediction to explore their data and consider the possibility of alternative statistical tests.     

Stopping Criteria in Sequential Choice

The essential decision in sequential choice is not which alternative to choose but when to stop acquiring additional information and commit to the leading alternative. Two studies investigate individuals’ stopping strategies. The key difference between the two studies is whether the experimenter or subjects controlled the order in which information was acquired. We hypothesize that subjects’ stopping criteria do not remain fixed, but are sensitive to acquisition costs and to the achieved progress during the choice. Across both studies 21 of 26 subjects exhibited significant adaptation. We also found an effort-reducing heuristic, stopping after all attributes in a predetermined set of core attributes had been acquired. As expected, use of this Core Attributes heuristic was greater when subjects controlled the order in which information was acquired. Both adaptation and the Core Attributes heuristic are compatible with the adaptive view of decision making and with the cost-benefit framework more generally.     

Investigating differential prediction by gender in employment-oriented personality measures

Gender-based differential prediction of job performance in employment-oriented personality measures has been left virtually unexamined. The use of 3 personality composites from the U.S. Army's instrument to predict 5 dimensions of job performance across 9 military jobs was investigated. Differential prediction, occurring in one third of the cases, was predominantly in the form of overprediction of female performances (i.e., higher male intercepts); slope differences were not found at above-chance levels. Female performance on the Effort and Leadership dimension was overpredicted in 90% of all predictor-criterion-job combinations, suggesting the measurement of this performance dimension as the source of the differential prediction rather than bias in the personality measures. Findings of overprediction of female performance parallel those of research investigating differential prediction by race in the ability domain.     

Programs of religious/spiritual support in hospitals - five “Whies” and five “Hows”

A contemporary orientation of the hospital experience model must encompass the clients’ religious-spiritual dimension. The objective of this paper is to share a previous experience, highlighting at least five reasons hospitals should invest in this direction, and an equal number of steps required to achieve it. In the first part, the text discourses about five reasons to invest in religious-spiritual support programs: 1. Religious-spiritual wellbeing is related to better health; 2. Religious-spiritual appreciation is a standard for hospital accreditation; 3. To undo religious-spiritual misunderstandings that can affect treatment; 4. Patients demand a religious-spiritual outlook from the institution; and 5. Costs may be reduced with religious-spiritual support. In the second part, the text suggests five steps to implement religious-spiritual support programs: 1. Deep institutional involvement; 2. Formal staff training; 3. Infrastructure and resources; 4. Adjustment of institutional politics; and 5. Agreement with religious-spiritual leaders. The authors hope the information compiled here can inspire hospitals to adopt actions toward optimization of the healing experience.