The Internet and World Wide Web as a Resource for Mental Health Occupational Therapists

SUMMARY

The Information Superhighway, the buzzword referring to the Internet and World Wide Web system, is a new resource for occupational therapy. Therapists are discovering how the Internet and World Wide Web can allow them to access the information that they need for research, treatment planning, education, communication, and leisure pursuits. This article describes how the Internet and World Wide Web work, defines terms and tools common to these new technologies, and gives some specific locations that an occupational therapist may find useful. References are shared that relate to general mental health resources and occupational therapy in mental health resources.     

The Rice Virtual Lab in Statistics

The Rice Virtual Laboratory in Statistics is an integrated combination of an electronic textbook, simulations/demonstrations, and case studies. The electronic textbook covers basic concepts in statistics and data analysis and contains links to data analysis tools, instructional demonstrations/simulations, and other on-line texts. The simulations and demonstrations help make abstract concepts concrete and allow students to investigate various aspects of statistical tests and distributions. Case studies demonstrate the real-world applicability of statistical methods. Materials are available on the World-Wide Web.     

The path analysis controversy: a new statistical approach to strong appraisal of verisimilitude

A new approach for using path analysis to appraise the verisimilitude of theories is described. Rather than trying to test a model's truth (correctness), this method corroborates a class of path diagrams by determining how well they predict intradata relations in comparison with other diagrams. The observed correlation matrix is partitioned into disjoint sets. One set is used to estimate the model parameters, and a nonoverlapping set is used to assess the model's verisimilitude. Computer code was written to generate competing models and to test the conjectured model's superiority (relative to the generated set) using diagram combinatorics and is available on the Web (http://www.vanderbilt.edu/quantmetheval/downloads.htm).     

Believers and Skeptics: Where Social Worker Situate Themselves Regarding the Code of Ethics

Based on individual and focus-group interviews, this article describes how social workers in a variety of settings and geographical areas within Ontario approached ethical issues in their daily practices. Two primary approaches to professional ethics emerge from the data: principle based and virtue based, reflecting the orientation of groups we label believers and skeptics, respectively. The code of ethics appears to be the fulcrum from which our participants swing. The believers show faith in the code of ethics and the skeptics are dubious that codes are necessarily in the best interests of clients. The article describes the thinking behind the actions of the believers and skeptics and explores possibilities for future practice and research with respect to decision-making regarding ethical issues in the social work profession.     

Accessing Digital Images

SUMMARY

This article discusses sources for and issues related to digital Christian art images available on the Internet. An annotated list of relevant Web sites is listed, along with advice on how to locate specific images. Also included in the article are discussions of vocabulary, fact verification, and copyright issues.     

A Review of “The Reformation. A Brief History”

Scholars researching the varieties of Orthodox Judaism have different types of primary and secondary resources available to them electronically. Books and journals are available digitally. Web sites emanate from institutions, organizations, and individuals that have clear ideological and political preferences. There is increasing use of the Internet by Orthodox and Haredi Jews for a variety of religious, communal, personal, and educational purposes. Religious Jewish residents of the West Bank maintain community Web sites that provide historical, theological, institutional, and communal information. This article describes some of the Web-based resources and tools that reflect the wide range of Orthodox thought, activity, and practices.     

Tracking the line of primary gaze in a walking simulator: Modeling and calibration

This article describes a system for tracking the line of primary gaze (LoPG) of participants as they view a large projection screen. Using a magnetic head tracker and a tracking algorithm, we find the onscreen location at which a participant is pointing a head-mounted crosshair. The algorithm presented for tracking the LoPG uses a polynomial function to correct for distortion in magnetic tracker readings, a geometric model for computing LoPG from corrected tracker measurements, and a method for finding the intersection of the LoPG with the screen. Calibration techniques for the above methods are presented. The results of two experiments validating the algorithm and calibration methods are also reported. Experiments showed an improvement in accuracy of LoPG tracking provided by each of the two presented calibration steps, yielding errors in LoPG measurements of less than 2° over a wide range of head positions. Source code for the described algorithms can be downloaded from the Psychonomic Society Web archive,http://www.psychonomic.org/archive/.     

Collecting responses through Web page drag and drop.

This article describes how to collect responses from experimental participants using drag and drop on a Web page. In particular, we describe how drag and drop can be used in a text search task in which participants read a text and then locate and categorize certain elements of the text (e.g., to identify the main claim of a persuasive paragraph). Using this technique, participants respond by clicking on a text segment and dragging it to a screen field or icon. We have successfully used this technique in both the argument element identification experiment that we describe here and a tutoring system that we created to teach students to identify source characteristics while reading historical texts (Britt, Perfetti, Van Dyke, & Gabrys, 2000). The implementation described here exploits the capability of recent versions of Microsoft's Internet Explorer Web browser to handle embedded XML documents and drag and drop events.     

Tracking the line of primary gaze in a walking simulator: modeling and calibration.

This article describes a system for tracking the line of primary gaze (LoPG) of participants as they view a large projection screen. Using a magnetic head tracker and a tracking algorithm, we find the onscreen location at which a participant is pointing a head-mounted crosshair. The algorithm presented for tracking the LoPG uses a polynomial function to correct for distortion in magnetic tracker readings, a geometric model for computing LoPG from corrected tracker measurements, and a method for finding the intersection of the LoPG with the screen. Calibration techniques for the above methods are presented. The results of two experiments validating the algorithm and calibration methods are also reported. Experiments showed an improvement in accuracy of LoPG tracking provided by each of the two presented calibration steps, yielding errors in LoPG measurements of less than 2 degrees over a wide range of head positions. Source code for the described algorithms can be downloaded from the Psychonomic Society Web archive, http://www.psychonomic.org/archive/.     

Web‐Assisted Career Counseling

For the past 20 years counselors have used computer‐based career information systems to assist clients with career planning and job hunting. Much of the same this information is now available on the Internet and can be accessed without the aid of a counselor. Such developments are likely to have a major impact on employment counseling practices. This article outlines selected Web‐assisted counseling issues that are likely to affect counselors over the next few years and summarizes the career services currently available on the World Wide Web.     

Calculating nominal group statistics in collaboration studies

In many areas of psychology researchers compare the output of pairs of people with people working individually. This is done by calculating estimates for nominal groups, the output of two individuals if they had worked together. The way this is often done is by creating a single set of pairs either randomly or based on their location in a data file. This paper shows that this approach introduces unnecessary error. Two alternatives are developed and described. The first calculates statistics for all permissible sets of pairs. Unfortunately the number of sets is too large for modern computers for moderate sample sizes. The second alternative calculates statistics on all possible pairs. Several simulations are reported which show that both methods provide good estimates for the mean and trimmed mean. However, the all pairs procedure provides a biased estimate of the variance. Based on simulations, an adjustment is recommended for estimating the variance. Functions in S-Plus/R are provided in an appendix and are available from the author's Web page along with updates and alternatives (www.sussex.ac.uk/users/danw/s-plus/ngstats.htm).     

N-Watch: A program for deriving neighborhood size and other psycholinguistic statistics

This article describes a Windows program that enables users to obtain a broad range of statistics concerning the properties of word and nonword stimuli, including measures of word frequency, orthographic similarity, orthographic and phonological structure, age of acquisition, and imageability. It is designed for use by researchers in psycholinguistics, particularly those concerned with recognition of isolated words. The program computes measures of orthographic similarity on line, either with respect to a default vocabulary of 30,605 words or to a vocabulary specified by the user. In addition to providing standard orthographic neighborhood measures, the program can be used to obtain information about other forms of orthographic similarity, such as transposed-letter similarity and embedded-word similarity. It is available, free of charge, from the following Web site: http://www.maccs.mq.edu.au/≈colin/N-Watch/.     

Collecting responses through Web page drag and drop

This article describes how to collect responses from experimental participants using drag and drop on a Web page. In particular, we describe how drag and drop can be used in a text search task in which participants read a text and then locate and categorize certain elements of the text (e.g., to identify the main claim of a persuasive paragraph). Using this technique, participants respond by clicking on a text segment and dragging it to a screen field or icon. We have successfully used this technique in both the argument element identification experiment that we describe here and a tutoring system that we created to teach students to identify source characteristics while reading historical texts (Britt, Perfetti, Van Dyke, &; Gabrys, 2000). The implementation described here exploits the capability of recent versions of Microsoft’s Internet Explorer Web browser to handle embedded XML documents and drag and drop events.     

How to launch a national Internet-based panel study quickly: lessons from studying how American are coping with the tragedy of September 11, 2001?

This article reports on the planning, development, and implementation of a large national Internet-based panel study of how Americans are coping with the terrorist attacks of September 11, 2001. The study was designed to determine predictors and correlates of risk and resilience, both cross-sectionally and longitudinally. In order to acquire timely and meaningful data, we developed/adapted an extensive set of measures, obtained human subjects approval, and posted a research Web site just 17 days after the attacks. This article describes the major hurdles we confronted and the guidelines we recommend regarding these topics, including the methodological trade-offs inherent in Internet-based research, information technology requirements and tribulations, human subjects issues, selection of measures and securing permission for their use, and the challenges of participant recruitment. We also discuss issues that we did not anticipate, including the survey intervention. We focus not on findings, but on the concrete procedural, administrative, technical, and scientific challenges we encountered and the solutions we devised under considerable time and resource pressures.     

Simulation of complex survival distributions

This paper describes a method for generating sample survival distributions from a hypothetical population, as would be required for running Monte Carlo simulations. The method is based on the concept of a quincunx. Cases are entered into a life table and allowed to drop out or die during each interval with probabilities that mirror the hypothetical population. By repeating this process many times and tracking the results, the researcher is able to study the sampling distribution of effect size indices and test statistics, and can generate empirical estimates of power and precision for planned studies. Unlike other methods that are commonly used for this purpose, the model proposed here allows the researcher to define a population in which the hazard rates and/or attrition rates vary substantially from one time point to the next, as may be the case in clinical trials or studies of processing times. The method requires less than 100 lines of code and runs some 10,000 simulations per hour on a microcomputer.     

Quiz-o-Matic: A free Web-based tool for construction of self-scoring on-line quizzes

Increasingly, educators are using the World-Wide Web (the Web) and related technology to supplement their traditional teaching materials. In this paper, we present a free tool that has been placed on the Web to enable educators to create Web pages that present self-scoring quizzes. Such Web-based practice quizzes provide students with an opportunity for interactive assessment and review of course material. The tool, Quiz-o-Matic, uses active server pages to build the HTML and JavaScript code for each quiz, without requiring the user to edit any code. We present evidence that students judge the self-scoring quizzes to be useful and worthwhile additions to a course.