Cross-Sample Comparisons and External Validity – CORRIGENDUM
نویسندگان
چکیده
منابع مشابه
Theory and External Validity
Winer (1999 [this issue]) proposes that external validity concerns require more attention in theoretical research. The author argues that one cannot “enhance” external validity by choosing one method over another. External validity can only be “assessed” by better understanding how the focal variables in one’s theory interact with moderator variables that are seen as irrelevant early in a resea...
متن کاملLearning Behaviors Scale and Canadian Youths: Factorial Validity Generalization and Comparisons to the U.S. Standardization Sample
The factor structure of the Learning Behaviors Scale (LBS) was examined with a sample of 393 randomly selected Canadian youths in a large western city. An identical four-factor structure was observed for the Canadian sample as was obtained in the standardization sample of U.S. youths and with another American sample. Principal axis exploratory factor analysis with equamax rotations produced fac...
متن کاملExternal, Internal and Construct Validity
Introduction In research, validity refers to the degree to which findings are applicable in real-life situations. Essentially, if the findings are strongly valid, it implies that they have an excellent degree of applicability. In contrast, low validity implies that the survey is not applicable in real-life situations. The specific approach used during research has strong influence on validity. ...
متن کاملWeighting for External Validity∗
External validity is a challenge in treatment effect estimation. Even in randomized trials, the experimental sample often differs from the population of interest. If participation decisions are explained by observed variables such differences can be overcome by reweighting. However, participation may depend on unobserved variables. Even in such cases, under a common support assumption there exi...
متن کاملInternal and external validity of attention-deficit hyperactivity disorder in a population-based sample of adults.
BACKGROUND Follow-up studies of childhood ADHD have shown persistence of the disorder into adulthood, but no epidemiological data are yet available. METHOD ADHD DSM-IV symptoms were obtained by self-report in an adult population-based sample of 1813 adults (aged 18-75 years), that was drawn from an automated general practitioner system used in Nijmegen, The Netherlands. The structure of ADHD ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Experimental Political Science
سال: 2019
ISSN: 2052-2630,2052-2649
DOI: 10.1017/xps.2019.7