Comparison of Internet-based and paper-based questionnaires in Taiwan using multisample invariance approach.

This study examines whether the Internet-based questionnaire is psychometrically equivalent to the paper-based questionnaire. A random sample of 2,400 teachers in Taiwan was divided into experimental and control groups. The experimental group was invited to complete the electronic form of the Chinese version of Center for Epidemiologic Studies Depression Scale (CES-D) placed on the Internet, whereas the control group was invited to complete the paper-based CES-D, which they received by mail. The multisample invariance approach, derived from structural equation modeling (SEM), was applied to analyze the collected data. The analytical results show that the two groups have equivalent factor structures in the CES-D. That is, the items in CES-D function equivalently in the two groups. Then the equality of latent mean test was performed. The latent means of "depressed mood," "positive affect," and "interpersonal problems" in CES-D are not significantly different between these two groups. However, the difference in the "somatic symptoms" latent means between these two groups is statistically significant at alpha = 0.01. But the Cohen's d statistics indicates that such differences in latent means do not apparently lead to a meaningful effect size in practice. Both CES-D questionnaires exhibit equal validity, reliability, and factor structures and exhibit a little difference in latent means. Therefore, the Internet-based questionnaire represents a promising alternative to the paper-based questionnaire.     

Dual scaling for the analysis of categorical data

Dual scaling is a set of related techniques for the analysis of a wide assortment of categorical data types including contingency tables and multiple-choice, rank order, and paired comparison data. When applied to a contingency table, dual scaling also goes by the name "correspondence analysis," and when applied to multiple-choice data in which there are more than 2 items, "optimal scaling" and "multiple correspondence analysis. " Our aim of this article was to explain in nontechnical terms what dual scaling offers to an analysis of contingency table and multiple-choice data.     

Masquerading Toronto Through Caribana: Transnational Carnival Meets the Sign "Music Ends Here"

The title of this article aims to stage an engagement between what I am calling "Caribana's Toronto" (a masked Toronto, defined in opposition to a stereotyped Toronto the Good) and "Toronto's Caribana," for which the sign posted at the parade's finishing point (Music Ends here) is a fitting emblem. They keep each other in check, I argue, but not in stasis. I will bring these formulations together by way of a theory of "cultural remittance," and what I have found to be a useful distinction between two modes of desire, nostalgia, and yearning. I mean cultural remittance to encompass gestures to an elsewhere (home, often), but also to a beyond, a new set of possibilities for the place of diasporic residence.     

A controlled trial of an internet-based intervention program for cannabis users

In the last decade, several programs for the treatment of cannabis-related disorders were developed. Until now, no information is available on the efficacy of Internet-based counseling approaches for this target group. This article describes the evaluation of "quit the shit," a web-based intervention developed to help young people to quit or reduce their cannabis use significantly. Cannabis users seeking web-based treatment were included in a two-arm controlled trial conducted on a website for drug-related information and prevention. After the baseline assessment, members of the treatment condition were randomized to a 50-day intervention program. Other trial participants were put on a waiting list. A post-test was conducted 3 months after randomization. Of all 1,292 subjects included in the trial, a total of 206 participants took part at the post-test. Per-protocol- and intention-to-treat analyses were conducted. Members of the treatment condition showed a significantly stronger reduction in cannabis use (primary outcome) than the control group. In the per-protocol analyses, moderate-to-strong effects were found for the reduction of the frequency and the reduction of the quantity of consumed cannabis. Small-to-moderate effects were observed on the secondary outcomes (use-related self-efficacy, anxiety, depression, and life satisfaction). Despite limitations concerning the interpretation of the results, the intervention seems to offer an effective treatment option for persons with cannabis-related problems.     

Scientific LogAnalyzer: A Web-based tool for analyses of server log files in psychological research

Scientific LogAnalyzer is a platform-independent interactive Web service for the analysis of log files. Scientific LogAnalyzer offers several features not available in other log file analysis tools—for example, organizational criteria and computational algorithms suited to aid behavioral and social scientists. Scientific LogAnalyzer is highly flexible on the input side (unlimited types of log file formats), while strictly keeping a scientific output format. Features include (1) free definition of log file format, (2) searching and marking dependent on any combination of strings (necessary for identifying conditions in experiment data), (3) computation of response times, (4) detection of multiple sessions, (5) speedy analysis of large log files, (6) output in HTML and/or tab-delimited form, suitable for import into statistics software, and (7) a module for analyzing and visualizing drop-out. Several methodological features specifically needed in the analysis of data collected in Internet-based experiments have been implemented in the Web-based tool and are described in this article. A regression analysis with data from 44 log file analyses shows that the size of the log file and the domain name lookup are the two main factors determining the duration of an analysis. It is less than a minute for a standard experimental study with a 2 × 2 design, a dozen Web pages, and 48 participants (ca. 800 lines, including data from drop-outs). The current version of Scientific LogAnalyzer is freely available for small log files. Its Web address ishttp://genpsylab-logcrunsh.unizh.ch/.     

Web-based experiment control software for research and teaching on human learning

In this article we describe some of the experimental software we have developed for the study of associative human learning and memory. All these programs have the appearance of very simple video games. Some of them use the participants' behavioral responses to certain stimuli during the game as a dependent variable for measuring their learning of the target cue-outcome associations. Some others explicitly ask participants to rate the degree of relationship they perceive between the cues and the outcomes. These programs are implemented in Web pages using JavaScript, which allows their use both in traditional laboratory experiments as well as in Internet-based experiments.     

The Web Experimental Psychology Lab: Five years of data collection on the Internet

In fall 1995, the worldwide-accessible Web Experimental Psychology Lab (http://www.genpsylab. unizh.ch) opened its doors to Web surfers and Web experimenters. It offers a frequently visited place at which to conduct true experiments over the Internet. Data from 5 years of laboratory running time are presented, along with recommendations for setting up and maintaining a virtual laboratory, including sections on the history of the Web laboratory and of Web experimenting, the laboratory’s structure and design, visitor demographics, the Kids’ Experimental Psychology Lab, access statistics, administration, software and hardware, marketing, other Web laboratories, data security, and data quality. It is concluded that experimental data collection via the Internet has proven to be an enrichment to science. Consequently, the Web Experimental Psychology Lab will continue and extend its services to the scientific community.     

Must the bearer of a right have the concept of that to which he has a right?

Stevens critiques what he calls the "conceptual possession requirement" as defined by Michael Tooley in his article, "Abortion and infanticide," Philosophy and Public Affairs 1972 Fall; 2(1): 37-65. Tooley argued that a being has a right to something only if it has the concept of that thing. He claimed that fetuses and infants do not have a serious right to life because they have no concept of a continuing self, and that therefore abortion and infanticide are morally permissible. Stevens contends that the conceptual possession requirement is not valid, offers a counterexample to Tooley's argument, and defends his reasoning against what he presumes might be Tooley's counterarguments.     

False claims about false memory research

Pezdek and Lam [Pezdek, K. & Lam, S. (2007). What research paradigms have cognitive psychologists used to study "False memory," and what are the implications of these choices? Consciousness and Cognition] claim that the majority of research into false memories has been misguided. Specifically, they charge that false memory scientists have been (1) misusing the term "false memory," (2) relying on the wrong methodologies to study false memories, and (3) misapplying false memory research to real world situations. We review each of these claims and highlight the problems with them. We conclude that several types of false memory research have advanced our knowledge of autobiographical and recovered memories, and that future research will continue to make significant contributions to how we understand memory and memory errors.     

Internetgest��tzte Nachsorge bei Bulimia nervosa

Based on the knowledge about high relapse rates in bulimia nervosa and the effectiveness of Internet-based prevention programs, a 9-month manualized Internet-based follow-up care program for women with bulimia nervosa after inpatient treatment will be evaluated. A total of 258 women are to be included in the randomized controlled trial and at least 180 women should complete the study. Women will be recruited from 13 psychosomatic hospitals in Germany. Primary outcome is the number of patients without symptoms 9 months after randomization. Data will be collected via self-monitoring diaries as well as a standardized diagnostic interview. Secondary outcomes are the frequency of objective binge episodes and compensatory behavior 9 and 18 months after randomization as well as changes in additional eating disorder symptoms, general psychopathology, self-esteem and impulsiveness 9 and 18 months after randomization.     

Scientific LogAnalyzer: a web-based tool for analyses of server log files in psychological research.

Scientific LogAnalyzer is a platform-independent interactive Web service for the analysis of log files. Scientific LogAnalyzer offers several features not available in other log file analysis tools--for example, organizational criteria and computational algorithms suited to aid behavioral and social scientists. Scientific LogAnalyzer is highly flexible on the input side (unlimited types of log file formats), while strictly keeping a scientific output format. Features include (1) free definition of log file format, (2) searching and marking dependent on any combination of strings (necessary for identifying conditions in experiment data), (3) computation of response times, (4) detection of multiple sessions, (5) speedy analysis of large log files, (6) output in HTML and/or tab-delimited form, suitable for import into statistics software, and (7) a module for analyzing and visualizing drop-out. Several methodological features specifically needed in the analysis of data collected in Internet-based experiments have been implemented in the Web-based tool and are described in this article. A regression analysis with data from 44 log file analyses shows that the size of the log file and the domain name lookup are the two main factors determining the duration of an analysis. It is less than a minute for a standard experimental study with a 2 x 2 design, a dozen Web pages, and 48 participants (ca. 800 lines, including data from drop-outs). The current version of Scientific LogAnalyzer is freely available for small log files. Its Web address is http://genpsylab-logcrunsh.unizh.ch/.     

ERRATUM NOTICE

Erratum . The Philsophical Forum Volume 36, Issue 2
Victoria Burke's article in the preceding issue of The Philsophical Forum . contained two typographical errors:1. p. 215. for "Pratchen Markell," read, "Patchen Markell."2. p. 220. for "Wilfrid Launer Unviersity," read "Wilfrid LaurierUnvierstiy." Our apologies to both Professor Markell and Professor Burke for these mistakes.     

Operationism in psychology: what the debate is about, what the debate should be about

I offer an analysis of operationism in psychology, which is rooted in an historical study of the investigative practices of two of its early proponents (S. S. Stevens and E. C. Tolman). According to this analysis, early psychological operationists emphasized the importance of experimental operations and called for scientists to specify what kinds of operations were to count as empirical indicators for the referents of their concepts. While such specifications were referred to as "definitions," I show that such definitions were not taken to constitute a priori knowledge or be analytically true. Rather, they served the pragmatic function of enabling scientists to do research on a purported phenomenon. I argue that historical and philosophical discussions of problems with operationism have conflated it, both conceptually and historically, with positivism, and I raise the question of what are the "real" issues behind the debate about operationism.     

Meta-analysis of medical self-help groups

Self-help groups (SHGs) may rival all other forms of treatment sometime within the next century (see Goodman & Jacobs article in "The Handbook of Group Psychotherapy," Wiley, 1994), though the "purist" model of SHGs seems inaccurate because many professionals are actually involved. Although traditional forms of group treatment have kept pace with empirical research (Fuhriman & Burlingame, "The Handbook of Group Psychotherapy," 1994), SHGs have not. In particular, medical SHGs, often promoted by hospitals as viable treatment alternatives, have no systemized database from which to draw conclusions about overall effectiveness compared to traditional group therapies. A preliminary assessment of this area is presented using a meta-analysis of articles culled from a comprehensive review of the literature from 1970 to 1997. Results indicate that although the posttreatment analysis produced no significant differences between active and control conditions, pre to posttreatment scores indicated that SHGs produced higher patient improvement when compared to the control condition. Future implications for research and use of medical SHGs are explored.     

Interval-level measurement with visual analogue scales in Internet-based research: VAS Generator

The present article describes VAS Generator (www.vasgenerator.net), a free Web service for creating a wide range of visual analogue scales that can be used as measurement devices in Web surveys and Web experimentation, as well as for local computerized assessment. A step-by-step example for creating and implementing a visual analogue scale with visual feedback is given. VAS Generator and the scales it generates work independently of platforms and use the underlying languages HTML and JavaScript. Results from a validation study with 355 participants are reported and show that the scales generated with VAS Generator approximate an interval-scale level. In light of previous research on visual analogue versus categorical (e.g., radio button) scales in Internet-based research, we conclude that categorical scales only reach ordinal-scale level, and thus visual analogue scales are to be preferred whenever possible.     

Different randomized multiple-baseline models for different situations: A practical guide for single-case intervention researchers

Single-case researchers often implement multiple-baseline designs as their preferred methodology for intervention evaluations. Recent writings and empirical investigations have argued in favor of incorporating various forms of randomization into such designs for the purpose of elevating the intervention study's internal validity and scientific credibility. In this article, we consider a variety of randomized multiple-baseline designs and associated randomization statistical tests, along with their potential strengths and limitations. In what amounts to a practical guide, we refer school psychology researchers to these versatile randomization procedures for planning and executing their intervention studies.     

Charpentier (1891) on the size-weight illusion

This paper offers background for an English translation of an article originally published in 1891 by Augustin Charpentier (1852-1916), as well as a summary of it. The article is frequently described as providing the first experimental evidence for the size-weight illusion. A comparison of experiments on the judged heaviness of lifted weights carried out by Weber (1834) and by Charpentier (1891) supports the view that Charpentier's work deserves priority; review of other experimental studies on the size-weight illusion in the 1890s suggests that the idea that the illusion depended on "disappointed expectations," especially with respect to speed of lift, became dominant almost immediately following the publication of Charpentier's paper. The fate of this and other ideas, including "motor energy," in 20th-century research on the illusion is briefly described.     

The Teacher as Partner: Exploring Participant Structures,Symmetry, and Identity Work in Scaffolding

In this article, we examine the role that different participant structures can play in supporting inquiry-based science learning. We frame mastering scientific inquiry as mastering the "what," "why," and "how" of the cultural tools that scientists employ. We present a participant structure we call the teacher as partner and show how it renders the what, why, and how visible while establishing symmetry between teachers and students. We draw on Wertsch's (1998) distinction between mastery, gaining proficiency with a cultural tool, and appropriation, making a tool one's own, to show that the partner participant structure contributes to both. Thus, we propose that the teacher as partner serve as a generative metaphor for inquiry teaching in responding to current calls to consider identity formation as well as subject-matter learning in formal schooling. We hope that it invites research on instructional moves that can demystify the process of science and help students identify themselves as ratified participants who can contend with scientific issues as citizens.     

The Effect on Behavior of Being in a Control Group

This study examined how individuals react when they know they are missing an experimental treatment as a function of having been assigned to a control group. Subjects in one condition were informed that they were a control group and would miss receiving extra money for doing well on experimental tasks. Subjects in a second condition were informed that they would miss receiving electric shocks for doing poorly on the same tasks. In the third condition subjects were given no information about missed conditions. Subjects who believed they were missing the chance to receive extra money tended to do worse, while those who believed they were missing the shocks did better on the experimental tasks than did subjects unaware of any other condition. In addition, missing-reward subjects made more errors and did less work than did missing-punishment subjects. There were no differences in attitude towards the experiment as a function of experimental condition. Differences in task performance were discussed in terms of inequity theory (Adams, 1963), the evaluation of social programs, and Campbell's (Note 1) suggestion of "informed randomization.     

Effect sizes for experimenting psychologists.

This article describes three families of effect size estimators and their use in situations of general and specific interest to experimenting psychologists. The situations discussed include both between- and within-group (repeated measures) designs. Also described is the counternull statistic, which is useful in preventing common errors of interpretation in null hypothesis significance testing. The emphasis is on correlation (r-type) effect size indicators, but a wide variety of difference-type and ratio-type effect size estimators are also described.