Vocal congruence in mother-infant play

Turn-taking is the fundamental temporal structure of adult dialogue. This structure defines two types of joint silence: intrapersonal pause (silence bounded by the vocalizations of a single speaker) and switching pause (silence bounded by the vocalizations of different speakers). Switching pauses mark the boundaries of the turn exchange. In adult conversation the mean durations of both types of pause are characteristically matched between partners. This matching, termed vocal congruence, occurs developmentally earlier in the case of switching pauses. We hypothesized and confirmed that mothers and infants match switching pauses but not intrapersonal pauses at 4 months, even though the infants' vocalizations are prelinguistic. Second, since there are known affective correlates of vocal congruence in adult conversation, we hypothesized a similar affective correlate for mother-infant vocal congruence. We found, for the intrapersonal pause only, that the degree of matching within a dyad correlated with infant affective engagement. We conclude, from switching pause congruence, that a turntaking dialogic structure is being regulated in the mother-infant pair at 4 months in the same way as seen in adult conversation. Thus, both the temporal structure of adult dialogue and its affective correlate are prelinguistic.Supported in part by NIMH grant No. 41675.     

Achieving productive synergy: Integrating departments into a company

Collaboration between departments and divisions is critical for companies to use their resources successfully. Many executives are experimenting with liaison officers, project teams, and matrix designs. However, groups must believe that their goals are cooperative to use these procedures. Common tasks, shared rewards, supportive attitudes, and shared values develop motivating cooperative goals for organizational units. Case studies illustrate how cooperative goals and coordination devices integrate departments into a company.The author thanks the Social Sciences and Humanities Research Council of Canada for its financial support.     

Gender expectations for alcohol use: A study of the significance of the masculine role

One hundred sixteen undergraduates assigned traditional gender-stereotyping adjectives and adjective phrases to two male and two female stimuli. Included in this set of traits were statements regarding drinking beer, drinking wine, and getting drunk. Results indicated that male stimuli were attributed stereotypically masculine traits (e.g., acts as a leader, is willing to take risks), and were attributed both beer drinking and getting drunk significantly more often than the female stimuli. By contrast, female stimuli were attributed stereotypically feminine traits (e.g., dependent, sensitive) and were attributed wine drinking significantly more often than the male stimuli. These data provide direct evidence that expectations regarding beer drinking and getting drunk are aspects of the traditional male gender role. The social and mental health implications of the findings are discussed.     

Facial perception studies using the macintosh

Research on how people perceive human faces has benefited from recent advances in microcomputer technology. The present paper describes techniques that can be used to prepare and present facial stimuli on a Macintosh computer and the advantages of using a computer for preparing and presenting such stimuli.     

A cross-validation of sex differences in the expression of depression

A considerable amount of evidence has accumulated indicating a greater rate of depression among females compared to males. In addition, recent investigations have revealed distinct patterns of depressive responding as a function of sex. The present study provided a cross-validational test of findings reported by Funabiki and colleagues. Male and female college students indicated the likelihood that they would engage in 79 behavioral analytically derived behaviors or cognitions if depressed. Stepwise discriminant function analyses were performed to determine maximum separation of male and female responses. This procedure yielded a 55.6% overall variable cross-validation rate. Many of the findings were consistent with Radloff and Rae's theoretical view of sex differences in learned susceptibility to depression. The data also suggest several avenues for future research and support the utility of investigating theories of depression within the context of a continuity between normal mood states and depressive phenomena.Useful comments on an earlier draft of this article were provided by Mark Hammarlund and Lorence S. Miller. The order of authorship was determined by the flip of a coin.     

An automated apparatus for the assessment of social preferences in rodents

Preference apparatuses offer a straightforward method for the assessment of social preference in a controlled manner. The present paper provides the information necessary for the construction of an automated preference apparatus for rodents and a demonstration of the operation of this apparatus. In a representative study,Peromyscus polionotus females demonstrated preference for intact over castrated males.     

Visual and tactual form complexity:A psychophysical approach to perceptual equivalence

Equivalence of two modalities for processing form-complexity information was investigated by obtaining category judgments of the complexity of 100 random forms from 40 Ss who explored the forms visually and 40 Ss who explored them tactually. Intercorrelations of judgments and multiple regression analyses with form measures indicate that information was used in the same fashion independent of input modality. Latencies were interpreted as reflecting information gaining and processing capabilities.     

The role of values in the choice shift

In Study I, the self-ideal discrepancy in risk taking was found to be unrelated to the strength of values relevant to the risks under consideration, and the other-self discrepancy was found to be related to these values only by virtue of one of its components, inital preference. Hence the use of these discrepancies as measures of value strength must be questioned. This casts doubt on some of the evidence formerly thought to support the assumption that values provide the force that drives the choice shift. In Study II, two hypotheses derived from this assumption were not supported. In light of this result, and closely related negative findings from two other studies, it would appear that this assumption must either be discarded or revised. Some possible lines of revision are suggested. Some of the results were also prejudicial to two theories about the mechanism through which values or other forces allegedly produce the shift: norm-comparison theory and pluralistic-ignorance theory.     

Commitment to Justice in Conflict between Unequal Status Persons

Possible determinants of a high-status person's conformity to the norm of justice and the consequences of this conformity on conflict resolution were explored. Ninety-six college students were induced to be high-status bargainers. Subjects believed that their partner was committed either to their group's self-interest or to justice in the conflict. Subjects negotiated with an opposing low-status bargainer who made a self-advancement appeal, an appeal based on an equity concept of justice, or an appeal based on a responsiveness to needs concept of justice. As predicted, subjects who believed that their partner was committed to justice as compared to the group's self-interest agreed more often to the low-status person's request for improved outcomes and indicated that they had a higher level of motivation to be just, more seriously considered the low-status person's position and situation, and were more willing to compromise. Contrary to expectations, subjects who were targets of the justice appeals did not agree significantly more often to the low-status person's request nor did targets of the self-advancement appeal. The data suggest that the norm of justice may elicit conformity when invoked by a group member, though it may induce little conformity when invoked by an opposing bargainer. Results were also interpreted as suggesting that seeking to do justice induces compromises toward the other bargainer's position by reducing egocentric biases.