منابع مشابه
Internal and External Validity in Clinical Research
dvances in clinical psychology critically depend on methods researchers use for investigating the causal relationships among variables. Research questions commonly include issues about the putative mechanisms associated with various forms of psychopathology (e.g., do dysfunctional beliefs cause depression?) and questions about the effects of treatments (e.g., does cognitive therapy cause a grea...
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 کاملTheory 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 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 کاملNature and Validity of Contracts in Stem Cell Therapeutic Research
One of the most influential scientific approaches in the twentieth century has been discovering stem cells and their therapeutic effectiveness. On the one hand, countless diseases are considered incurable through valid scientific treatments and on the other hand, the hope for new treatments has been considered a promotor of the medical studies in research centers. Throughout such research piece...
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: Acta Obstetricia et Gynecologica Scandinavica
سال: 2017
ISSN: 0001-6349
DOI: 10.1111/aogs.13268