From Zero to Sixty: Calibrating Real-Time Responses

Recent advances in data recording technology have given researchers new ways of collecting on-line and continuous data for analyzing input-output systems. For example, continuous response digital interfaces are increasingly used in psychophysics. The statistical problem related to these input-output systems reduces to linking time-varying covariates to a continuous response variate. Using real-time data obtained from an experiment in psychoacoustics, we showcase new statistical tools that incorporate dynamical elements of an input-output system. We employ functional data analysis (FDA) methods and a simple differential equation to analyze and model the continuous responses. Furthermore, we outline the issues involved in analyzing input-output systems when the exact form of the underlying mathematical model is not known. Finally, we develop a calibration method to facilitate inter-subject and intra-subject comparisons. This work was supported by grants from the National Sciences and Engineering Research Council (NSERC) to J. O. Ramsay and to D. J. Levitin, and by a grant from the Social Sciences and Humanities Research Council (SSHRC) to D. J. Levitin. We would like to thank Bennett Smith for designing and implementing the software used to conduct the pitch tracking experiment. Also, we wish to thank the research assistants in the Levitin Laboratory involved in the data collection: Catherine Chapados, Andrew Schaaf and Carla Himmelman. We would also like to acknowledge Giles Hooker’s work on implementing the generalized profiling software used within this paper.     

What children do on the Internet: domains visited and their relationship to socio-demographic characteristics and academic performance.

HomeNetToo is a longitudinal field study designed to examine the antecedents and consequences of home Internet use in low-income families. Participants included 140 children, mostly 13-year-old African American (83%) boys (58%), living in single-parent households (75%) where the median annual income was $15,000 (USD). This report focuses on children's Internet activities, socio-demographic characteristics related to their Internet activities, and the relationship between academic performance and Internet activities. Overall, findings indicate that low-income children initially use the Internet primarily for entertainment. As home Internet use loses its novelty children become more focused in their Internet activities, reducing the number of websites they visit and visiting more websites targeted to their specific interests. Pornography websites are popular initially, especially among boys, but their popularity decreases dramatically after 3 months. Age, race, and sex have little influence on which websites are most popular. Academic performance predicts subsequent Internet activities, and Internet activities predict subsequent academic performance. Directions for future research to identify mechanisms that mediate the relationship between Internet activities and academic performance and implications for the digital divide are discussed.     

Are Mexican American Adolescents at Greater Risk of Suicidal Behaviors?

A reexamination of ethnicity as a risk factor for adolescent suicidal behavior, focusing on whether Mexican American youths are at increased risk, was undertaken. Data from a sample of 4,175 African, European, and Mexican Americans, aged 11-17, are presented. We examined lifetime attempts and past year attempts, thoughts, and plans. Odds ratios, adjusting for covariates, indicate no differences between European and Mexican Americans on past year thoughts, plans, or attempts or lifetime attempts. Although some studies have reported Mexican American youths are at increased risk, we did not find any differences. Possible explanations for disparate results across studies are discussed, in particular methods effects.     

Reactivity and regulation in children prenatally exposed to cocaine

Children prenatally exposed to cocaine may be at elevated risk for adjustment problems in early development because of greater reactivity and reduced regulation during challenging tasks. Few studies have examined whether cocaine-exposed children show such difficulties during the preschool years, a period marked by increased social and cognitive demands and by rapid changes in reactivity and regulation. The authors addressed this question by examining frustration reactivity and regulation of behavior during a problem-solving task in cocaine-exposed and -unexposed preschoolers. Participants were 174 4.5-year-olds (M age = 4.55 years, SD = 0.09). Frustration reactivity was measured as latency to show frustration and number of disruptive behaviors, whereas regulation was measured as latency to approach and attempt the problem-solving task and number of problem-solving behaviors. Results indicated that cocaine-exposed children took longer to attempt the problem-solving task but that cocaine-exposed boys showed the most difficulties: They were quicker to express frustration and were more disruptive. Effect sizes were relatively small, suggesting both resilience and vulnerabilities.     

Set ambiguity: A key determinant of reliability and validity in the picture story exercise

The picture story exercise (PSE), in which participants write imaginative stories in response to motivationally-arousing images, is the most commonly-used tool for the assessment of implicit motives. Despite decades of research into the qualities of effective individual picture cues, much less is known about the desirable properties of overall picture sets. The present research highlights a previously undocumented methodological consideration—set ambiguity—which has important implications for the reliability and validity of the PSE. In a four-part study of 74 undergraduates, motive scores derived from an ambiguous picture set comprising cues that vary in motivational focus displayed greater test–retest reliability, convergent validity, and predictive validity than those derived from an unambiguous picture set. Researchers are therefore advised to consider set ambiguity when selecting images for use in PSE research.     

Training analysis in the dutch society for psychoanalytic psychotherapy: A survey of attitudes and feasibility

SUMMARY

As is the case in many training courses in psychoanalytic psychotherapy, one of the training requirements of the Dutch Society for Psychoanalytical Psychotherapy (NVPP) is a training analysis, currently a minimum duration of 700 hours. During the last few years, this requirement has become somewhat controversial. Because the NVPP does not have information about the current interest in NVPP membership, the Board of the NVPP decided to do a survey. Of 995 psychiatrists, clinical psychologists and psychotherapists, who had recently completed their training, or were still in training, 623 filled in a questionnaire. Of those who are interested in the NVPP training, 39 per cent judged the training analysis as not feasible in terms of time, and 61 per cent in terms of money. Forms of personal treatment thought desirable for anyone who wishes to become a psychoanalytic psychotherapist at a specialist level are, in descending order, psychoanalytic psychotherapy (63%), psychoanalysis (39%), psychoanalytic group psychotherapy (25%), and psychoanalytic marital or family therapy (6%). Respondents who judge personal analysis as not feasible, also tend to judge psychoanalysis to be equivalent to other forms of psychoanalytic psychotherapy, whereas those who judge personal analysis as feasible, tend to think that personal analysis is essential for a psychoanalytic psychotherapist at the specialist level.