Who uses community mental health centres? A study of one health district

A caseload analysis was undertaken to investigate those clients seen by five community mental health centre teams within one healthcare district. The 985 clients are described in terms of demographic and clinical features and questions relating to service provision are discussed.     

Recognition and recall of invisible objects

Three experiments examined recognition and recall of items that people imagined as being invisible. When one item hid another, the hidden item suffered in recognition, but so did the one that remained visible; the demand to imagine items invisibly made both items less recognizable than in control conditions. Cued recall did not depend on whether the visible item or the invisible item was the cue, but it did depend on whether the initial task required relational processing of the items. When both items were invisible in a dark imaginary scene, there was a general loss in all measures of memory, including memory for the scene. None of the results requires recourse to the “out of sight, out of mind” principle that memory depends on the visual characteristics of images. The results attest, instead, to the importance of the informational characteristics of memorial records.     

Selection of software in the instructional laboratory

In this paper, I discuss a number of issues concerning software selection in instructional laboratories. First, I describe several taxonomies of instructional software and argue that the most important dimension of instructional software is that it must be an efficient tool. Second, I discuss some elements of the context of the instructional lab, including sophistication of users. Third, I explore design features, especially those related to ease of learning to use packages. Several other issues are also considered, such as where to find software reviews.     

A critical evaluation of software for experiment development in research and teaching

This paper compares several software packages that allow users to create new computer-run experiments, but do not require that users be able to program. Three dimensions are considered: package requirements, ease of learning, and power and flexibility.     

The linkage between stimulus frequency and covert peak areas as it relates to monaural localization

Head-related transfer functions for differently centered narrow noise bands were obtained on 6 subjects. Derived from these measurements were covert peak areas (CPAs), defined as the spatial constellation of loudspeakers that generates maximal sound pressure at the entrance of the ear canal for specific bands of frequency. On the basis of previous data, we proposed that different frequency bands served as important spectral cues for monaural localization of sounds from different loci and that location judgments were directed toward the CPAs associated with the different bands. In the first study, the stimuli were bandpass filtered so that they contained only those frequencies whose associated CPAs occupied either the monaural listener’s “upper” or “lower” spatial regions. Loudspeakers, separated by 15°, were stationed in the left hemifield, ranging from 0° to 180° azimuth and ?45° to 60° elevation. Subjects reported the loudspeaker from which the sound appeared to originate. Judgments of the sound’s elevation were in general accord with the CPAs associated with the different frequency segments. In the second study, monaural localization tests were administered in which different 2.0-kHz-wide frequency bands linked with specific CPAs were notch filtered from a 3.5-kHz highpass noise band. For the control condition, the highpass noise was unfiltered. The data demonstrated that filtering a frequency segment linked with specific CPAs resulted in significantly fewer location responses directed toward that particular spatial region. These results demonstrate in greater detail the relation between the directional filtering properties of the pinna and monaural localization of sound.     

A comparison of inexpensive statistical packages for microcomputers running MS-DOS

The purpose of the present paper is to describe and compare some inexpensive software packages that calculate a variety of statistics on microcomputers running MS-DOS. For each package, hardware requirements, program capabilities, limitations, accuracy, error handling, and other features are considered.     

Salkovskis on obsessional-compulsive neurosis: a rejoinder

Salkovskis (Behav Res. Ther. 27, 677–682, 1989) presents a development of his 1985 account, together with empirical findings. A number of criticisms of this work are presented.