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Ecological Validity (ecological + validity)
Selected AbstractsWhat Is Ecological Validity?INFANCY, Issue 4 2001A Dimensional Analysis Ecological validity has typically been taken to refer to whether or not one can generalize from observed behavior in the laboratory to natural behavior in the world. Although common in current discussions of research, the idea of ecological validity has a long history in psychological thought. A brief historical examination of this idea reveals that concerns with ecological validity are evident in multiple dimensions of experimental work, including the nature of the experimental setting, the stimuli under investigation, and the observer's response employed as the measure. One problem with this multidimensionality, however, is that no explicit criteria have been offered for applying this concept to an evaluation of research. One consequence of this problem is that concerns with ecological validity can be raised in most experimental situations. This article includes a discussion of some demands of ecological validity and the nature of these different dimensions, as well as a critical evaluation of research on the development of mobility with respect to these constraints. [source] The Concept of Ecological Validity: What Are Its Limitations and Is It Bad to Be Invalid?INFANCY, Issue 4 2001David J. Lewkowicz The concept of ecological validity has played an important role in research on perceptual development. The limitations of this concept are discussed and illustrated with examples from research on the development of intersensory perception. By itself the concept of ecological validity fails to provide objective criteria for experimental design, but together with more traditional bottom-up methodological approaches it can be used in a convergent operations manner to enrich our understanding of perceptual development. [source] Same-Sex Marriage: A Construct in a Quest for Ecological ValidityANALYSES OF SOCIAL ISSUES & PUBLIC POLICY, Issue 1 2004Carlton W. Parks Jr. The Kitzinger and Wilkinson's ASAP paper serves as the foundation for this discussion of the same-sex marriage construct. The major focus of this discussion is, "What needs to occur in order for ecological validity to be achieved?" First, there needs to be some concerted attention paid to the entire spectrum of close relationships (at both the positive and the negative end of the continuum) before the same-sex marriage construct is fully embraced. Next, some attention needs to be paid to the diversity of viewpoints/beliefs/attitudes that exists concerning same-sex marriage within the ethnically and culturally diverse LGBT communities. [source] What Is Ecological Validity?INFANCY, Issue 4 2001A Dimensional Analysis Ecological validity has typically been taken to refer to whether or not one can generalize from observed behavior in the laboratory to natural behavior in the world. Although common in current discussions of research, the idea of ecological validity has a long history in psychological thought. A brief historical examination of this idea reveals that concerns with ecological validity are evident in multiple dimensions of experimental work, including the nature of the experimental setting, the stimuli under investigation, and the observer's response employed as the measure. One problem with this multidimensionality, however, is that no explicit criteria have been offered for applying this concept to an evaluation of research. One consequence of this problem is that concerns with ecological validity can be raised in most experimental situations. This article includes a discussion of some demands of ecological validity and the nature of these different dimensions, as well as a critical evaluation of research on the development of mobility with respect to these constraints. [source] Cerebral oxygenation decreases but does not impair performance during self-paced, strenuous exerciseACTA PHYSIOLOGICA, Issue 4 2010F. Billaut Abstract Aim:, The reduction in cerebral oxygenation (Cox) is associated with the cessation of exercise during constant work rate and incremental tests to exhaustion. Yet in exercises of this nature, ecological validity is limited due to work rate being either fully or partly dictated by the protocol, and it is unknown whether cerebral deoxygenation also occurs during self-paced exercise. Here, we investigated the cerebral haemodynamics during a 5-km running time trial in trained runners. Methods:, Rating of perceived exertion (RPE) and surface electromyogram (EMG) of lower limb muscles were recorded every 0.5 km. Changes in Cox (prefrontal lobe) were monitored via near-infrared spectroscopy through concentration changes in oxy- and deoxyhaemoglobin (,[O2Hb], ,[HHb]). Changes in total Hb were calculated (,[THb] = ,[O2Hb] + ,[HHb]) and used as an index of change in regional blood volume. Results:, During the trial, RPE increased from 6.6 ± 0.6 to 19.1 ± 0.7 indicating maximal exertion. Cox rose from baseline to 2.5 km (,,[O2Hb], ,,[HHb], ,,[THb]), remained constant between 2.5 and 4.5 km, and fell from 4.5 to 5 km (,,[O2Hb], ,,[HHb], ,,[THb]). Interestingly, the drop in Cox at the end of the trial coincided with a final end spurt in treadmill speed and concomitant increase in skeletal muscle recruitment (as revealed by higher lower limb EMG). Conclusion:, Results confirm the large tolerance for change in Cox during exercise at sea level, yet further indicate that, in conditions of self-selected work rate, cerebral deoxygenation remains within a range that does not hinder strenuous exercise performance. [source] What Is Ecological Validity?INFANCY, Issue 4 2001A Dimensional Analysis Ecological validity has typically been taken to refer to whether or not one can generalize from observed behavior in the laboratory to natural behavior in the world. Although common in current discussions of research, the idea of ecological validity has a long history in psychological thought. A brief historical examination of this idea reveals that concerns with ecological validity are evident in multiple dimensions of experimental work, including the nature of the experimental setting, the stimuli under investigation, and the observer's response employed as the measure. One problem with this multidimensionality, however, is that no explicit criteria have been offered for applying this concept to an evaluation of research. One consequence of this problem is that concerns with ecological validity can be raised in most experimental situations. This article includes a discussion of some demands of ecological validity and the nature of these different dimensions, as well as a critical evaluation of research on the development of mobility with respect to these constraints. [source] The Concept of Ecological Validity: What Are Its Limitations and Is It Bad to Be Invalid?INFANCY, Issue 4 2001David J. Lewkowicz The concept of ecological validity has played an important role in research on perceptual development. The limitations of this concept are discussed and illustrated with examples from research on the development of intersensory perception. By itself the concept of ecological validity fails to provide objective criteria for experimental design, but together with more traditional bottom-up methodological approaches it can be used in a convergent operations manner to enrich our understanding of perceptual development. [source] Going for the Goal: Improving youths' problem-solving skills through a school-based interventionJOURNAL OF COMMUNITY PSYCHOLOGY, Issue 3 2002Todd C. O'Hearn This study evaluated Going for the Goal (GOAL), a school-based intervention designed by Danish and colleagues to teach life skills to at-risk urban adolescents. We extended previous evaluation of GOAL by including an assessment of means-ends problem-solving skills. The 10-week program was administered to 479 middle school students by 46 trained high school student leaders in a predominantly Hispanic community. The program focused on setting positive, reachable goals; anticipating and responding to barriers to goal attainment; using social support; and building on one's strengths. Results demonstrated gains in knowledge of the skills being taught and improvement in problem-solving skills. Leaders also showed an increase in their knowledge of life skills. The approach maximizes both community resources and ecological validity while giving high school leaders the chance to benefit in their role as helpers. © 2002 Wiley Periodicals, Inc. [source] What Leads to Romantic Attraction: Similarity, Reciprocity, Security, or Beauty?JOURNAL OF PERSONALITY, Issue 4 2009Evidence From a Speed-Dating Study ABSTRACT Years of attraction research have established several "principles" of attraction with robust evidence. However, a major limitation of previous attraction studies is that they have almost exclusively relied on well-controlled experiments, which are often criticized for lacking ecological validity. The current research was designed to examine initial attraction in a real-life setting,speed-dating. Social Relations Model analyses demonstrated that initial attraction was a function of the actor, the partner, and the unique dyadic relationship between these two. Meta-analyses showed intriguing sex differences and similarities. Self characteristics better predicted women's attraction than they did for men, whereas partner characteristics predicted men's attraction far better than they did for women. The strongest predictor of attraction for both sexes was partners' physical attractiveness. Finally, there was some support for the reciprocity principle but no evidence for the similarity principle. [source] National Board Certification (NBC) as a catalyst for teachers' learning about teaching: The effects of the NBC process on candidate teachers' PCK developmentJOURNAL OF RESEARCH IN SCIENCE TEACHING, Issue 7 2008Soonhye Park Abstract This study examined how the National Board Certification (NBC) process, especially the portfolio creation, influenced candidate teachers' pedagogical content knowledge (PCK). In a larger sense, this study aimed to construct a better understanding of how teachers develop PCK and to establish ecological validity of the National Board assessments. Qualitative research methods, most notably case study, were utilized. Participants were three high school science teachers who were going thorough the NBC process. Data sources included classroom observations, interviews, teachers' reflections, and researcher's field notes. Data were analyzed using the constant comparative method and enumerative approach. Findings indicated that the NBC process affected five aspects of the candidate teachers' instructional practices that were closely related to PCK development: (a) reflection on teaching practices, (b) implementation of new and/or innovative teaching strategies, (c) inquiry-oriented instruction, (d) assessments of students' learning, and (e) understanding of students. © 2008 Wiley Periodicals, Inc. J Res Sci Teach 45: 812,834, 2008 [source] Comparison of ecological validity of learning disabilities diagnostic modelsPSYCHOLOGY IN THE SCHOOLS, Issue 2 2006Vincent J. Dean The purpose of this article is to examine models designed for the determination of a learning disability and compare them to specific criteria to determine whether the given diagnostic process is ecological in nature. The traditional child-centered deficit model (CCD), Relative Achievement Discrepancy model (RAD), and Responsiveness to Intervention model (RTI) were evaluated against the following three questions: (a) Does the environmental context of the assessment adequately represent the real-life situation? (b) Are the assessment stimuli relevant to the daily classroom activity? (c) Are the student behavior and/or required response natural and representative of the construct being assessed? The results of this examination suggested that the RTI has the most potential for ecological validity, but currently falls short. Suggestions for future research are included. © 2006 Wiley Periodicals, Inc. Psychol Schs 43: 157,168, 2006. [source] Same-Sex Marriage: A Construct in a Quest for Ecological ValidityANALYSES OF SOCIAL ISSUES & PUBLIC POLICY, Issue 1 2004Carlton W. Parks Jr. The Kitzinger and Wilkinson's ASAP paper serves as the foundation for this discussion of the same-sex marriage construct. The major focus of this discussion is, "What needs to occur in order for ecological validity to be achieved?" First, there needs to be some concerted attention paid to the entire spectrum of close relationships (at both the positive and the negative end of the continuum) before the same-sex marriage construct is fully embraced. Next, some attention needs to be paid to the diversity of viewpoints/beliefs/attitudes that exists concerning same-sex marriage within the ethnically and culturally diverse LGBT communities. [source] Does Trial presentation medium matter in jury simulation research?APPLIED COGNITIVE PSYCHOLOGY, Issue 5 2010Evaluating the effectiveness of eyewitness expert testimony This study assesses whether mock jurors' perceptions of eyewitness expert testimony vary based on the level of ecological validity,video or transcript trial presentation medium. In Experiment 1, 496 jury-eligible mock jurors were presented a simulated trial. Each served in one condition in a 3 (no expert or eyewitness expert either with or without prosecution rebuttal witness),×,2 (trial presentation medium: Video or transcript) design. Participants were generally less certain of the defendant's guilt after the eyewitness expert testimony, and affective and cognitive ratings of the expert testimony were higher in the transcript than video condition. However, there were no significant interactions of modality with expert conditions, thus reducing concerns that jury simulation research must be conducted with live or video trials to be externally valid. Findings were replicated in Experiment 2 using the testimony of a different eyewitness expert rated to have a more dynamic communication style. Copyright © 2009 John Wiley & Sons, Ltd. [source] The new object-spatial-verbal cognitive style model: Theory and measurementAPPLIED COGNITIVE PSYCHOLOGY, Issue 5 2009Olesya Blazhenkova The current study challenges traditional approaches to Visual-Verbal cognitive style as a unitary bipolar dimension, and instead suggests a new three-dimensional cognitive style model developed on the basis of modern cognitive science theories that distinguish between object imagery, spatial imagery and verbal dimensions. The results of the confirmatory factor analysis demonstrated that the overall fit to the data of the new three-dimensional model of cognitive style was significantly better than that of a traditional model. Furthermore, based on the new theoretical model, we designed and validated a new self-report instrument assessing the individual differences in object imagery, spatial imagery and verbal cognitive styles, the Object-Spatial Imagery and Verbal Questionnaire (OSIVQ). Across a series of studies, the OSIVQ demonstrated acceptable internal reliability as well as construct, criterion and ecological validity. The current study supports the validity of an object-spatial-verbal cognitive style dimension and related measures when developed on the basis of modern cognitive science theories. Copyright © 2008 John Wiley & Sons, Ltd. [source] Is it inherently prejudicial to try a juvenile as an adult?,BEHAVIORAL SCIENCES & THE LAW, Issue 1 2001Murray Levine Ph.D. Given only information that a youth who could have been tried as either an adult or as a juvenile was being tried as an adult for murder, 218 undergraduate mock jurors were able to form consistent impressions of the defendant. A very high percent of our mock jurors included a criminal or juvenile justice history as part of that impression. A very large majority of the mock jurors also said that knowledge of that criminal history would be relevant to their vote of guilty. Almost all mock jurors said they would be influenced toward voting guilty by knowledge of a previous criminal history. Few of the other components of the impression were so closely correlated with a judgment of relevance, or with a judgment that they would be influenced toward voting guilty by the knowledge of that component of the stereotype. The effect is relatively specific to knowledge of a previous criminal history. The study has limited ecological validity. Nonetheless, we raise questions about whether the fact that a youth is put on trial as an adult is inherently prejudicial, and violates the Sixth Amendment right to an impartial jury. Copyright © 2001 John Wiley & Sons, Ltd. [source] | ||||||||||