A note on the decidability of a strong relevant logic

A modified filtrations argument is used to prove that the relevant logic S of [2] is decidable.     

Measurement and interpretation of situational and dispositional attributions

Four problems with the measurement of situational and dispositional causality are reviewed. These are: the assumption that dispositional and situational causality are inversely linked; the diversity of the causes considered within the situational and dispositional categories; the difficulties of differentiating between causes internal and external to the actor; and the low convergent validity of various closed-ended attribution measures. A study reaffirms the lack of convergence among closed-ended measures and between closed and open-ended measures as well. In a second study, subjects' ratings of closed-ended attributions are taken as indicators that a freely chosen to not freely chosen dimension may better represent subjects' attributional thought than the internal/external dimension does. Open-ended data from the convergence study are recoded using this scheme and achieve significantly better convergence with closed-ended data. The implications of this redefinition for solving the various measurement problems are discussed.     

Octave generalization of specific interference effects in memory for tonal pitch

An experiment is described which demonstrates that certain highly specific disruptive effects in immediate memory for tonal pitch generalize across octaves. Pitch recognition was required after a retention interval during which six other tones were played. The effects of including in the interpolated sequence tones which were removed by exactly an octave from those which had already been demonstrated to produce disruption were investigated. Generalization of these interference effects was found to result both from tones which were displaced an octave higher and (to a lesser extent) from tones which were displaced an octave lower. It is concluded that the memory store that retains information concerning the pitch of ifidividual tones is bidimensional in nature, both “tone height” and “tone chroma” being represented.     

Limits of the processing view in accounting for dissociations among memory measures in a clinical population

In three experiments, we examined the performance of patients with schizophrenia on implicit and explicit memory tests that have been shown to involve predominantly data-driven or predominantly conceptually driven processes. In Experiment 1, we compared the implicit tests of category production (conceptually driven)and word identification (data driven) and found that schizophrenic patients’ performance on these tests did not differ from that of normal subjects. In Experiment 2, a comparison of the category-production and explicit cued-recall tests, both of which involve conceptual processes, showed that schizophrenic patients were impaired on the cued-recall test but not on the category-production test. In Experiment 3, a comparison of the word-identification and explicit graphemic cued-recall tests, both of which involve data-driven processes, showed that patients were impaired on the cued-recall test but not on the word-identification test. The results of both Experiments 2 and 3 revealed a dissociation between implicit and explicit test performance under conditions in which the two tests involve similar- types of processes. These results support theoretical views that distinguish implicit from explicit modes of retrieval.     

A preliminary report on a new auditory after-effect

It is found that protracted monotic stimulation at a certain frequency lowers the DL of that frequency for the contralateral ear by some 47 per cent. There were eight subjects and six controls; the frequency was 1,000 c.p.s. at 40 d.b.s. It is suggested that this after-effect is analogous to figural after-effects in vision. (Some further related findings, as yet preliminary, are also reported).     

Children's embedded figures test: an examination of item difficulty in grades K-4

Indices of item difficulty for both the Tent and the House series of the Children's Embedded Figures Test are reported from a sample of 240 children in grades K-4. Results indicate that the failure rule should be re-considered and the test shortened.