STAZ: Interactive software for undergraduate statistics

STAZ is an interactive computer program that demonstrates statistical concepts, many of which cannot be readily demonstrated using conventional methods. Use of dynamic graphics encourages active engagement with challenging statistical concepts. The program consists of 13 graphical demonstrations, most of which allow for interactive participation by students. A detailed Help file with guided explanations accompanies each demonstration. STAZ is a multiple document interface program that makes full use of Windows features, such as tiling, links, and multitasking. Designed to be used as a supplement for any undergraduate statistics course, STAZ may be used by either instructors in classroom settings or students working independently.     

The Relation of Psychological Needs for Autonomy and Relatedness to Vitality,Well-Being,and Mortality in a Nursing Home1

Drawing from both self-determination theory (Deci & Ryan, 1991) and Carstensen's (1993) socioemotional selectivity theory, we hypothesized that well-being and health would be facilitated by: (a) greater personal autonomy; (b) perceived support for autonomy from both nursing-home staff and residents friends and relatives; and (c) the emotional quality (rather than quantity) of residents' contacts with friends and family. Results based on structured interview and survey data from 50 nursing-home residents, showed that both autonomy support and relatedness indexes correlated with psychological out-comes. Personal autonomy also was significantly related to mortality at a 1-year follow-up. It also was found that subjective vitality (Ryan & Frederick, 1997) was associated with lower distress and greater well-being, and perceived autonomy and relatedness.     

Assessment of a cognitive training program for hyperactive children

Modeling, self-verbalization, and self-reinforcement techniques were used to train hyperactive children in more effective and less impulsive strategies for approaching cognitive tasks, academic problems, and social situations. Eighteen hyperactive children took part in the training program. The control group, which received no training, consisted of 11 children, matched with the experimental group on age, IQ, and measures of hyperactivity and impulsivity. Several tests and measures, some of which have been shown to differentiate between hyperactive and normal children, were administered prior to training, at the end of the 3- month training period, and after a further 3- month period in which no training took place. The trained group showed significantly greater improvement on several of the measures, both at the time of posttesting and on the follow-up evaluation.This research was supported by Canada Council Grant #S74-0750, principal investigator, Virginia I. Douglas.     

Viewing direction and pictorial representation

During prolonged monocular observation from afar, an upright wire cube (Necker cube) or a drawing of such a cube inverts continuously so that the lower of the two frontal faces appears to be either in front (version A) or in back (version B). Version A is perceived as if it were viewed obliquely from above and version B as if seen from below. In our experiments, timing the durations of the versions showed that version A lasted longer than version B. When a wire cube was shifted upward so that it was actually viewed slightly from below, version B lasted longer than version A. The actual viewing direction was apparently taken into account by the subjects, which was not the case when the cube was replaced by a drawing showing the projection of the cube. In that case, version A always lasted longer, regardless of the actual viewing direction. This finding conforms with picture viewing in general, where a three-dimensional object’s orientation does not change when the observer’s viewing direction changes.     

Errors in short-term memory for good and poor readers

This study examined the role of phonetic factors in the performance of good and poor beginning readers on a verbal short-term memory task. Good and poor readers in the second and third grades repeated four-item lists of consonant-vowel syllables in which each consonant shared zero, one, or two features with other consonants in the string. As in previous studies, the poor readers performed less accurately than the good readers. However, the nature of their errors was the same: Both groups tended to transpose initial consonants as a function of their phonetic similarity and adjacency. These findings suggest that poor readers are able to employ a phonetic coding strategy in short-term memory, as do good readers, but less skillfully.     

Group psychotherapy with grandparents rearing their emotionally disturbed grandchildren

This paper discusses the increasing incidence of grandchildren being raised by grandparents, and describes a clinical service developed to assist grandparents in rearing their emotionally disturbed grand-children. The development of a cohesive working group and the active involvement of grandparents for support as well as self-understanding is demonstrated.