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Biomedical subjects

F W Jones

Publications and source records attributed to F W Jones.

At least 19 recordsLinked to original sources
PubMed2006

Assessing the reading comprehension of adults with learning disabilities.

BACKGROUND: This study's aim was to begin the process of measuring the reading comprehension of adults with mild and borderline learning disabilities, in order to generate information to help clinicians and other professionals to make written material for adults with learning disabilities more comprehensible. METHODS: The Test for the Reception of Grammar (TROG), with items presented visually rather than orally, and the Reading Comprehension sub-test of the Wechsler Objective Reading Dimensions (WORD) battery were given to 24 service-users of a metropolitan community learning disability team who had an estimated IQ in the range 50-79. RESULTS & CONCLUSIONS: These tests were demonstrated to have satisfactory split-half reliability and convergent validity with this population, supporting both their use in this study and in clinical work. Data are presented concerning the distribution across the sample of reading-ages and the comprehension of written grammatical constructions. These data should be useful to those who are preparing written material for adults with learning disabilities.

Adolescent↗
PubMed1998

Perceptual categorization: connectionist modelling and decision rules.

Although it is currently popular to model human associative learning using connectionist networks, the mechanism by which their output activations are converted to probabilities of response has received relatively little attention. Several possible models of this decision process are considered here, including a simple ratio rule, a simple difference rule, their exponential versions, and a winner-take-all network. Two categorization experiments that attempt to dissociate these models are reported. Analogues of the experiments were presented to a single-layer, feed-forward, delta-rule network. Only the exponential ratio rule and the winner-take-all architecture, acting on the networks' output activations that corresponded to responses available on test, were capable of fully predicting the mean response results. In addition, unlike the exponential ratio rule, the winner-take-all model has the potential to predict latencies. Further studies will be required to determine whether latencies produced under more stringent conditions conform to the model's predictions.

Adolescent↗
PubMed1976

An evaluation of an MMPI response consistency measure.

Response inconsistency as an index for invalidating MMPI protocols was investigated by measuring the number of inconsistent responses given to 14 pairs of identical items by brain-damaged and nonbrain-damaged schizophrenic, alcoholic, neurotic and normal patients (n = 22 in each of the 8 groups). In addition the patient's number of inconsistent responses were correlated with the usual MMPI validity measures (?, L, F and K). Although all the response consistency scores of the groups were high it was found that the brain-damaged were more response inconsistent than the nonbrain-damaged patients (regardless of psychiatric diagnoses). The correlations between response inconsistency and the MMPI validity measures were significant but low. Because of the over-all high level of response consistency found for all the groups, it was concluded that MMPI protocol validity should be based on the validity scale measures, rather than upon response inconsistency.

Adult↗