Talker continuity and the use of rate information during phonetic perception

Research has shown that speaking rate provides an important context for the perception of certain acoustic properties of speech. For example, syllable duration, which varies as a function of speaking rate, has been shown to influence the perception of voice onset time (VOT) for syllableinitial stop consonants. The purpose of the present experiments was to examine the influence of syllable duration when the initial portion of the syllable was produced by one talker and the remainder of the syllable was produced by a different talker. A short-duration and a long-duration /bi/-/pi/ continuum were synthesized with pitch and formant values appropriate to a female talker. When presented to listeners for identification, these stimuli demonstrated the typical effect of syllable duration on the voicing boundary: a shorter VOT boundary for the short stimuli than for the long stimuli. An /i/ vowel, synthesized with pitch and formant values appropriate to a male talker, was added to the end of each of the short tokens, producing a new hybrid continuum. Although the overall syllable duration of the hybrid stimuli equaled the original long stimuli, they produced a VOT boundary similar to that for the short stimuli. In a second experiment, two new /i/ vowels were synthesized. One had a pitch appropriate to a female talker with formant values appropriate to a male talker; the other had a pitch appropriate to a male talker and formants appropriate to a female talker. These vowels were used to create two new hybrid continua. In a third experiment, new hybrid continua were created by using more extreme male formant values. The results of both experiments demonstrated that the hybrid tokens with a change in pitch acted like the short stimuli, whereas the tokens with a change in formants acted like the long stimuli. A fourth experiment demonstrated that listeners could hear a change in talker with both sets of hybrid tokens. These results indicate that continuity of pitch but not formant structure appears to be the critical factor in the calculation of speaking rate within a syllable.     

Sex bias and language

Recent research has suggested that in certain contexts male terms may fail to be gender neutral (Moulton, Robinson, & Elias, 1978). Stricker (1977) has proposed that even explicitly generic terms such as adult and person may not be gender neutral. The conclusions of the highly controversial and influential Broverman, Vogel, Broverman, Clarkson, and Rosenkrantz (1970) study were based directly on the assumption that adult is a gender-neutral term. The present study consisted of a modified replication of the Broverman et al. study followed by an addendum that asked subjects in the gender-neutral condition to indicate whether they had thought of a neutral, male, or female stimulus person. As predicted, subjects did not tend to think of a neutral stimulus person. The implications of this finding for sex-role stereotype research as well as for guidlines for nonsexist language are discussed.This article is based on a master's thesis completed at Southern Illinois University by the first author.     

Interventions with families: preparing the way for teaching parenting skills

The purpose of this paper is twofold. Firstly, to consider an ecological model of the system network of any one family, and the idea of intervention as education, prevention and support. A community approach of primary prevention, secondary prevention and administrative action is outlined. Secondly, briefly to consider whether the study of dysfunctional families and intervention with referred families has provided us with guidelines for necessary parenting skills for functioning family living; assumptions about whether such skills can be taught; and, at what stage of the family life cycle, in what context and by whom such enabling teaching takes place.     

Action models—learning by doing

The aim of this workshop was to demonstrate experientially how action models can be used: to highlight particular themes; to study ongoing interactional patterns of the family system; to allow patterns of behaviour and communication to emerge along with the consequences of that pattern; to focus on the process rather than the content; to find the strengths and resources of the family; and to offer the opportunity of practising new skills and to gain insight through experience. Action techniques are specific acts or actions the therapist engages in to implement a strategy. Action is a deliberate intervention which will provide material shared with the family and therapist. Five different experiential exercises were demonstrated for use in family therapy training or in family therapy sessions.     

Exploring Conflict Culture in the Family: Consistency and Continuity of Conflict During Family Meal Discourse

Conflict discourse in the context of everyday activities of families during mealtimes was examined with a view to determining consistency and continuity on two occasions one year apart. In particular, the use of authority, the part played by each member of the family, and the ways in which conflicts were terminated was addressed. Data derived from Jewish families was considered not only to enable comparisons to be made with data derived from the broader community, but to illuminate the issues pertinent to the exploration of conflict within the family. It was observed over a period of time that there was a continuity of conflict culture within each family. Additionally it was found that generally, family conflict interactions terminated in standoffs rather than resorting to full blown conflicts and the outcome was, on the whole, favourable to all parties, with conversations continuing to be pursued without further conflict. In some instances termination of the episode was through an external agent, rather than a family member. The key part that family members play in deflecting conflict, especially the part played by mothers and siblings was noted. The extension of existing conflict coding schema to account for different types of authority moves, so as to discriminate between authority based on status and that which invokes an idea of shared responsibility or a common code of conduct is recommended. A further extension of the coding schema to account for paralinguistic aspects of communication is suggested.     

Parent Emotion Expression and Autonomic-Linked Emotion Dysregulation in Childhood ADHD

Despite evidence that ADHD is associated with disruptions in emotion regulation, few studies have examined the biological correlates of emotion dysregulation among children with this disorder. Prior work has pointed to roles of the parasympathetic and sympathetic nervous system, as indexed via respiratory sinus arrhythmia (RSA) and cardiac pre-ejection period (PEP), respectively. Work in typically developing populations suggests that parenting behavior and parental emotion expression may shape the development of these systems. To date, a single study has examined the independent and interactive roles of autonomic nervous system functioning and parent emotion expression in youth with ADHD. This study seeks to extend that work. 86 children (42 with ADHD), aged 8–12 years, and a parent completed a parent-child interaction task, while electrocardiography and impedance cardiography data were recorded to derive RSA and PEP. Parent and child emotion word use (positive and negative valence) were coded from recordings of the task. Parents of youth with ADHD used fewer positive emotion words throughout the task. Additionally, throughout the task, children with ADHD engaged in excessive RSA withdrawal from baseline. Further, the association between RSA reactivity and ADHD diagnosis was moderated by parent positive emotion word use. Specifically, those with RSA augmentation and parents displaying high positive affect across the task conditions were least likely to have an ADHD diagnosis. If replicated and extended, these results support the use of interventions specifically designed to increase parental modeling of positive emotions, while simultaneously focusing on building emotion regulation skills in youth with ADHD.     

A MATLAB toolbox for correcting within-individual effects of respiration rate and tidal volume on respiratory sinus arrhythmia during variable breathing

Respiratory sinus arrhythmia (RSA) is a common estimator of vagal outflow to the heart, dependent on parasympathetic activity. During variable breathing, both respiration rate and tidal volume contribute substantially to within-individual RSA variance. A respiratory control method allows for within-individual correction of the time-domain index of RSA. rsaToolbox is a set of MATLAB programs for scoring respiration-corrected RSA using measurements of cardiac interbeat intervals, respiratory-cycle times, and tidal volumes, recorded at different paced-breathing frequencies. The within-individual regression of RSA divided by tidal volume upon total respiratory cycle time is then used to estimate the baseline vagal tone for each breath of a given total respiratory-cycle time. During a subsequent analysis, the difference between the observed RSA (divided by the tidal volume at each breath) and the RSA divided by the tidal volume that was predicted by the baseline equation serves as an estimate of changes in vagal tone. rsaToolbox includes a graphical user interface for intuitive handling. Modular implementation of the algorithm also allows for flexible integration within other analytic strategies or for batch processing.     

The Critical Need to Recognize That Families Matter for Adult Health: A Systematic Review of the Literature

A systemic approach to researching families and health should capture the complex network within which family members are embedded, including multiple family relationships and larger systems of health care. However, much of the families and health research focused on adult family members has focused solely on intimate partnerships, usually the marital relationship. This neglects the remainder of the powerfully influencing family relationships adults retain, and may increasingly focus on as they age. We conducted a systematic review of the families and adult health literature, retaining 72 articles which were subsequently thematically coded to highlight main foci of this area of research. Results highlight six themes, which include family relationship quality, family composition, behavioral factors in health and health care, psychophysiological mediators, caregiving, and aging health. Findings support an underrepresentation of family members, other than the intimate partner, in research on adult health.