The voice of confidence: Paralinguistic cues and audience evaluation

A standard speaker read linguistically confident and doubtful texts in a confident or doubtful voice. A computer-based acoustic analysis of the four tapes showed that paralinguistic confidence was expressed by increased loudness of voice, rapid rate of speech, and infrequent, short pauses. Under some conditions, higher pitch levels and greater pitch and energy fluctuations in the voice were related to paralinguistic confidence. In a 2 × 2 design, observers perceived and used these cues to attribute confidence and related personality traits to the speaker. Both text and voice cues are related to confidence ratings; in addition, the two types of cue are related to differing personality attributes.     

Response probability and response latency to threshold electrocutaneous stimuli

A comparison was made between two measures of somatosensory sensitivity, response probability, and reaction time to electrocutaneous constant current pulses of 350-microsec duration. The psychometric functions are steeper than those obtained for other sensory modalities. Similarly, the reaction-time/intensity functions are also steeper than those obtained in other modalities, i.e., larger decreases in reaction time as a function of small increases in stimulus intensity. Ss exposed to a broad stimulus range, including high intensities, yield psychometric and reaction time functions displaced into a higher intensity region than when they are exposed to a narrow low-intensity range of stimuli. The data are discussed in terms of a decision-theory model of reaction time.     

Extending Holland's theory to adult women

The potential of Holland's theory for use in the vocational guidance of adult women depends in part on more validity data with regard to the conceptual meaningfulness of the constructs. This study reports the findings of a correlative analysis between scores on Holland's Vocational Preference Inventory (VPI), which measures the six “styles”, and selected scales on four criterion tests predicted in advance to be related to the VPI. The findings for this sample of adult women indicate strong evidence for the validity of the Intellectual, Conventional and Enterprising “styles”, but questions are raised with regard to the meaningfulness of the Realistic, Social, and Artistic types.     

Determinants of the perception of choice

Two experiments were conducted to investigate possible determinants of perceived choice. The first experiment employed an observer paradigm and the second employed an actor paradigm. The results of both studies provided evidence for the hypotheses that perceived choice will be greater when there is a small difference in attractiveness between outcome alternatives than when there is a large difference and under conditions of low certainty about the attractiveness of each outcome alternative than under conditions of high certainty. Also, the results of both studies provided some evidence for the hypothesis that the effect of the relative difference in attractiveness upon perceived choice will be greater under conditions of low certainty than under conditions of high certainty. The hypothesis that perceived choice will be less when there is no difference in attractiveness between outcome alternatives than when there is a small difference was not supported by the results of the first experiment but was supported by the results of the second experiment. The hypothesis that perceived choice will be greater the more time a person takes to select an action from possible actions was supported by results of the first experiment but not by those of the second experiment. The results for the relative difference and certainty variables were discussed in terms of a theoretical analysis of perceived choice.     

Discrimination of equal-energy,equally detectable auditory stimuli

Summary Two experiments were conducted. In the first experiment, psychometric functions were generated for tones of 988 Hz of 16 and 64 ms duration. The results indicate that for detection, both durations are within critical duration, i.e., equal detection levels were obtained for stimuli of equal energy. In the second experiment, pairs of equal-energy, equally detectable tones of 16 and 64 ms were used to test the ability of subjects to discriminate between them. The results indicate that equal-energy, equally detectable tones of different intensities and durations are discriminable from one another although the durations do not exceed the limits of complete reciprocity when the response measure is detection. Two different interpretations are presented and discussed.The authors would like to thank Jacob Gutgold and Miriam Izaks for their aid with the equipment and experiment.     

The propensity to recall another's completed and uncompleted tasks as a consequence of varying social relationships

Two laboratory experiments are reported. Each investigates the bias that social relationships exert on a subject's propensity to recall another's completed and uncompleted tasks. Using closed circuit television, subjects in both experiments observed a bogus other working on a set of puzzles. The person working completed only one-half of the puzzles. In three of the six experimental conditions in both experiments, subjects believed that the remaining puzzles could be completed at a later time. In the first experiment, a subject's relationship to the other was determined by cooperative, competitive, or individualistic economic incentives. In the second, the relationship was determined simply by their similarity or dissimilarity on a bogus personality test. Utilizing a combination of Lewinian assumptions and contemporary theory about memory, we hypothesized that the opportunity to resume work would result in an increased propensity to recall uncompleted tasks in the competitive (or dissimilar) conditions and a decreased propensity to do so in the cooperative (or similar) conditions. Results confirmed this hypothesis. Additional data in both experiments suggest that subjects' relationships with the bogus other altered the accessibility of this information. Theoretical implications of these findings and their relationship to research on prosocial behavior are discussed.     

Non-Informative Effects of Stimuli Functioning as Cues

The category of a first stimulus (S₁) serving as a cue may allow a subject to predict the category of a second stimulus (S₂). However, a cue may have effects on RT to S₂ that are independent of those derived from its intended role as a predictor. These non-informative effects of a cue may add to or subtract from the benefits associated with its predictive function. Two experiments demonstrate that when S₁ is in the same category as S₂ (as is frequently the case for valid cues in cueing experiments) but provides no information about S₂, RT is slower than when S₁ is in a different category from S₂. It is suggested that this category relation effect arises because inhibition of a response to S₁ is still present when S₂ arrives and that, in some cueing experiments, it may subtract from the RT benefits derived from the cue as a predictor of S₂. Also, RT to a visual but not to an auditory S₂ was faster after an auditory S₁ than after a visual S₁. It is argued that this modality combination effect is consistent with the view that auditory signals are more alerting than visual ones and that this is another factor to be taken into account in the design of cueing and other experiments.