Impulsivity, fight history, and camaraderie as predictors of a willingness to escalate a disturbance

This field study examined the relationships between six predictor variables and a self-report measure of spectators' likelihood of joining in a crowd disturbance. Subjects were males (N = 78) found in attendance at an ice hockey game. The variables jects were males (N = 78) found in attendance at an ice hockey game. The variables related to the likelihood of escalating a disturbance included subjects who were more impulsive, had a history of fighting, were younger, saw provocations as more volatile, liked to watch player fights and attended with others. A multiple regression analysis yielded a solution that accounted for 52.9% of the variance. The results were discussed against the background of previous research examining the factors associated with spectators' propensity for involving themselves in crowd disorders. The authors wish to thank the Medicine Hat Tigers Hockey Club for their cooperation.     

Coherence masking protection in speech sounds: The role of formant synchrony

Three experiments were performed to examine listeners’ thresholds for identifying stimuli whose spectra were modeled after the vowels /i/ and /ε/, with the differences between these stimuli restricted to the frequency of the first formant. The stimuli were presented in a low-pass masking noise that spectrally overlapped the first formant but not the higher formants. Identification thresholds were lower when the higher formants were present than when they were not, even though the first formant contained the only distinctive information for stimulus identification. This indicates that listeners were more sensitive in identifying the first formant energy through its contribution to the vowel than as an independent percept; this effect is given the namecoherence masking protection. The first experiment showed this effect for synthetic vowels in which the distinctive first formant was supported by a series of harmonics that progressed through the higher formants. In the second two experiments, the harmonics in the first formant region were removed, and the first formant was simulated by a narrow band of noise. This was done so that harmonic relations did not provide a basis for grouping the lower formant with the higher formants; coherence masking protection was still observed. However, when the temporal alignment of the onsets and offsets of the higher and lower formants was disrupted, the effect was eliminated, although the stimuli were still perceived as vowels. These results are interpreted as indicating that general principles of auditory grouping that can exploit regularities in temporal patterns cause acoustic energy belonging to a coherent speech sound to stand out in the auditory scene.     

Decision participation in public and private organizations

In recent years, there has been a convergence of democratic theory and management theory regarding the importance of participation in strategic decision making. In both the public and private sectors, the goal of increasing participation has been sought as a means to: (1) enhance the wisdom and effectiveness of decision-makers in crafting policy, and (2) secure the support of key actors in an organizations environment. Reform efforts, such as reinventing government and re-engineering the corporation, often have a goal of increasing participation by changing the structure of the organization. Despite the apparent enthusiasm for participation, it is not as easy to achieve as it might seem. Studies of the strategic decision-making process suggest that structural adaptations are not a particularly effective route to increase participation. In this study I examine participation in the strategic decisions of public and private organizations. A survey of 368 senior managers in public and private organizations is used to examine a model that relates participation to the decision type, the structure of the organization and the environment in which the decision is made. In doing so, I also examine the influence of internal (employees) and external (elected officials) participation in the decision processes of public and private organizations. The degree to which a decision falls under public and legal scrutiny, and the amount of “red tape” found in the organization prove to be critical factors influencing the amount of participation.     

Getting started with microcomputers in undergraduate education: Hints and guidelines

Microcomputers can serve many functions in undergraduate education, including control of laboratory experiments, presentation of classroom demonstrations, generation of handouts, and monitoring student performance. Panel members of a symposium presented several general guidelines for the use of microcomputers, and specific guidelines for selecting and purchasing equipment and for daily operation of a microcomputer facility.     

Book reviews

International Journal for Philosophy of Religion -     

EFFECTS OF FEEDBACK AND SELF-MONITORING ON HEAD TRAUMA YOUTHS' CONVERSATION SKILLS

The effects of feedback and self-recording on the small group conversational behaviors of two head trauma youths were evaluated. Feedback involved providing clients a light signal corresponding to positive or negative social interactions. The self-monitoring procedure required that the clients flip a switch corresponding with their positive or negative interactions. An A₁-B₁-C₁-A₂-C₂-B₂ design in which the feedback phase (B) and self-monitoring phase (C) were alternated to control for order effects demonstrated the efficacy of both interventions. Performance gains were also shown to generalize to less structured situations, bringing the clients' level of positive responses into a range established with a social comparison group.     

STM Experimenter: Using HyperCard and MacRecorder in short-term memory experiments

We describe a Macintosh program for the presentation of spoken word lists in short-term memory (STM) experiments. The program was developed with the use of HyperCard and MacRecorder. Parameters such as rate of item presentation, number of items per trial, and number of trials per block may be adjusted by the experimenter. The program features high-quality digitized sound, trial-to-trial word list randomization, and data logging. Computer-based experimentation offers several advantages over traditional approaches that involve tape recordings or lists read aloud by the experimenter. Methodological improvements afforded by computer-controlled item administration are discussed.     

Perceived ethicality of guided imagery in rape research

In our first study, undergraduate students (30 men, 30 women) evaluated the ethical acceptability of two previously published studies that used guided imagery in rape situations. In one, women imagined themselves as rape victims; in the other, men imagined themselves as rapists. Most students rated the research acceptable, but there was a significant interaction (p less than .05): Women found the study of women as victim less ethical, and men found the study of men as rapist less ethical. In our second study, 30 noncollege women evaluated the research on women as rape victims. After reading the scenario, none of these women said they would have agreed to participate or thought the research was ethically acceptable. We discuss issues of informed consent, demands of the research situation, and potential benefits and risks.