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Biomedical subjects

S Feldstein

Publications and source records attributed to S Feldstein.

At least 19 recordsLinked to original sources

Gender and speech rate in the perception of competence and social attractiveness.

The authors' hypotheses were that (a) listeners regard speakers whose global speech rates they judge to be similar to their own as more competent and more socially attractive than speakers whose rates are different from their own and (b) gender influences those perceptions. Participants were 17 male and 28 female listeners; they judged each of 3 male and 3 female speakers in terms of 10 unipolar adjective scales. The authors used 8 of the scales to derive 2 scores describing the extent to which the listener viewed a speaker as competent and socially attractive. The 2 scores were related by trend analyses (a) to the listeners' perceptions of the speakers' speech rates as compared with their own and (b) to comparisons of the actual speech rates of the speakers and listeners. The authors examined trend components of the data by split-plot multiple regression analyses. In general, the results supported both hypotheses. The participants judged speakers with speech rates similar to their own as more competent and socially attractive than speakers with speech rates slower or faster than their own. However, the ratings of competence were significantly influenced by the gender of the listeners, and those of social attractiveness were influenced by the gender of the listeners and the speakers.

Adult↗

Rhythms of dialogue in infancy: coordinated timing in development.

Although theories of early social development emphasize the advantage of mother-infant rhythmic coupling and bidirectional coordination, empirical demonstrations remain sparse. We therefore test the hypothesis that vocal rhythm coordination at age 4 months predicts attachment and cognition at age 12 months. Partner and site novelty were studied by recording mother-infant, stranger-infant, and mother-stranger face-to-face interactions in both home and laboratory sites for 88 4-month-old infants, for a total of 410 recordings. An automated dialogic coding scheme, appropriate to the nonperiodic rhythms of our data, implemented a systems concept of every action as jointly produced by both partners. Adult-infant coordination at age 4 months indeed predicted both outcomes at age 12 months, but midrange degree of mother-infant and stranger-infant coordination was optimal for attachment (Strange Situation), whereas high ("tight") stranger-infant coordination in the lab was optimal for cognition (Bayley Scales). Thus, high coordination can index more or less optimal outcomes, as a function of outcome measure, partner, and site. Bidirectional coordination patterns were salient in both attachment and cognition predictions. Comparison of mother-infant and stranger-infant interactions was particularly informative, suggesting the dynamics of infants' early differentiation from mothers. Stranger and infant showed different patterns of vocal rhythm activity level, were more bidirectional, accounted for 8 times more variance in Bayley scores, predicted attachment just as well as mother and infant, and revealed more varied contingency structures and a wider range of attachment outcomes. To explain why vocal timing measures at age 4 months predict outcomes at age 12 months, our dialogue model was construed as containing procedures for regulating the pragmatics of proto-conversation. The timing patterns of the 4-month-olds were seen as procedural or performance knowledge, and as precursors of various kinesic patterns in the outcomes of 12-month-olds. Thus, our work further defines a fundamental dyadic timing matrix--a system that guides the trajectory of relatedness, informing all relational theories of development.

Child Development↗

Health-related quality-of-life assessment of patients with life-threatening ventricular arrhythmias.

The purpose of this study was to determine whether treatments for life-threatening ventricular arrhythmias are associated with quality-of-life (QOL) and psychological distress. Multidimensional measures of QOL and psychological distress were used to cross-sectionally compare patients with ICDs to patients treated with antiarrhythmic drugs and patients without serious cardiac conditions. The sample consisted of 157 patients: 35 patients treated with antiarrhythmic medication only, 24 patients treated with ICD only, 25 patients treated with ICD and antiarrhythmic medication, and 73 controls. Patients completed the Medical Outcomes Study SF-36 health survey, the Brief Symptom Inventory, and background questionnaires. There were no significant differences in self-reported QOL and psychological distress between patients with or without ICD, and the occurrence of defibrillator shocks was unrelated to QOL and psychological distress. However, patients treated with antiarrhythmic drugs reported greater QOL impairment in physical functioning, vitality, emotional role limitations, and sleep, as well as greater psychological distress than patients not treated with antiarrhythmics. These limitations may be attributed to adverse effects arising from antiarrhythmic pharmacotherapy. Results of the present investigation suggest that QOL and psychological distress are maintained among ICD patients, whereas treatment with antiarrhythmic drugs are associated with a diminished QOL and greater psychological distress. These findings may assist cardiologists to select the optimal treatment for life-threatening ventricular arrhythmias that minimizes disturbances in health-related QOL and psychological distress and increases patient compliance.

Activities of Daily Living↗

Mathematical models for coordinated interpersonal timing in mother-infant interactions in the first year of life.

Two mathematical models of social contingency are examined in terms of their development over the first year of life. The interactions of 53 mothers and their infants were recorded at 6 weeks, 4 months, and 12 months. The infants' gazes at 6 weeks, the mothers' vocal behavior at 6 weeks, and the vocal behavior of the mother and infant at 4 and 12 months were automatically coded in terms of four states. The conditional dependence model and the response effects model were computed for each interaction at each age, and the coefficients of the models were examined as a function of age. The relative success of the models as estimates of moment-to-moment contingency as well as their variations with age are discussed.

Female↗

Down's syndrome and infant gaze. Gaze behavior of Down's syndrome and nondelayed infants in interactions with their mothers.

The study reported here compared the gaze behavior of infants with Down syndrome (DS) and nondelayed infants during interactions with their mothers. The subjects were 10 DS infants and 11 nondelayed infants. Five of the DS infants and 6 of the nondelayed infants were 4 months old; the rest were 9 months old. The results support the expectation that infants with DS gazed at their mothers longer than did nondelayed infants during face-to-face play, and also indicate that all the infants visually attended to their mothers less at 9 months than at 4 months of age. It is conjectured that the increased gaze of the infants with DS may well facilitate attachment in the 1st year of life.

Attention↗

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 correlates with infant affective engagement. We conclude, from switching pause congruence, that a turn-taking 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.

Affect↗

Adult-like temporal characteristics of mother-infant vocal interactions.

29 mothers and their 9-month-old-infants participated in a semistructured play episode. The temporal patterning of their vocal behavior was analyzed by means of a computerized analogue-to-digital conversion system (AVTA). Time-series regression analysis was employed to determine interpersonal influence over the course of the exchange for a variety of temporal parameters. The analysis revealed that the dyads engaged in alternating vocalization to a greater degree than simultaneous vocalization, and that there is a pattern of mutual influence (interpersonal accommodation) for switching pauses. The results suggest that some of the formal attributes observed in conversational exchanges between adult speakers are observable prior to the emergence of linguistic competence.

Female↗

Vocal cues to deception: a comparative channel approach.

The study investigated the leakage potential of different voice and speech cues using a cue isolation and masking design. Speech samples taken from an earlier experiment were used in which 15 female students of nursing dissimulated negative affect produced by an unpleasant movie or told the truth about positive affect following a pleasant movie. Several groups of judges rated these speech samples in five conditions: (1) forward or clear, (2) electronic filtering, (3) random splicing, (4) backwards, (5) pitch inversion, (6) tone-silence sequences. The results show that vocal cues do indeed carry leakage information and that, as reflected in the differences among the conditions masking different types of cues respectively, voice quality cues may be centrally implicated. In addition, gender differences in decoding ability are discussed.

Affect↗

Acoustical correlates of the perception of speech rate: an experimental investigation.

The purpose of the study was to investigate the influence of vocal frequency and vocal intensity upon the perception of speech rate at three levels of actual speech rate. A single sample of spontaneous speech was electronically varied to produce nine stimulus segments that factorially combined three levels each of vocal frequency and intensity. The nine stimuli were recorded such that preceding each was the original segment that served as the standard with which each of the nine stimuli was to be compared. The speech rate of the set of nine stimulus pairs was then electronically altered to obtain a slow set, a moderate set, and a fast set, although the duration of every segment in the three sets was 20 seconds. The sets were rated by different groups of judges in terms of four 7-point scales that measured perceived speech rate, pitch, loudness, and perceived duration. The results indicate that the perception of speech rate is positively related to vocal frequency and intensity at each of the three actual speech rates, and suggest that these relationships are a function of the repeated experience of almost always hearing such covariation in spontaneously occurring speech.

Adolescent↗

The chronography of interactions with autistic speakers: an initial report.

The aims of this study were to (a) describe the conversational time patterns of autistic persons capable of talking, and (b) examine the degree to which the autistic speakers synchronize the time patterns of their speech with those of the persons with whom they interact. Each of twelve autistic youths participated in two interactions, one with an experimenter and one with his or her parent. In addition, each parent engaged in a conversation with the experimenter. The results indicate that: (a) compared with those interactions involving the parents and experimenter, those involving the youths and parents exhibited longer switching pauses whereas those involving the youths and experimenter exhibited longer switching pauses and pauses; and (b) although the parents and experimenter achieved temporal synchrony in their interactions, there was no evidence that the youths achieved it with either the experimenter or their parents.

Adolescent↗

Chronographic speech patterns of acutely psychotic patients. A preliminary note.

This study was a preliminary attempt to explore the likelihood that, for psychiatric patients, amount of vocal activity (relative to silence) reflects degree of psychopathology and change with treatment. Five acute schizophrenic patients (two men and three women) were each seen in three interviews by one of two interviewers. After each interview, the interviewer evaluated the extent of his patient's pathology in terms of the Brief Psychiatric Rating Scale, and he and the patient separately completed a questionnaire designed to elicit their perceptions of the interview. The results reveal that the relative amounts of the patients' vocal activity were negatively related to the interviewers' ratings of their general level of psychopathology and were also related to several aspects of their perceptions and the interviewers' perceptions of the interview. However, the number of interviews per patient was too few to permit an evaluation of treatment effects.

Adult↗

The immediate overdenture.

The use of remaining roots of teeth enhances denture stability and retention. Teeth previously considered hopeless can now be used successfully as an aid in denture retention. The differential diagnosis for tooth selection and treatment is discussed, along with a step-by-step technique for constructing an immediate denture using prefabricated male and female attachments.

Denture Design↗