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ERIC Number: ED316580
Record Type: Non-Journal
Publication Date: 1989-Apr
Pages: 55
Abstractor: N/A
Reference Count: N/A
Research: How Are We Doing?
Rosenthal, Robert
An overview of the state of the art in psychological research is presented, with an emphasis on the attention given to effect sizes. The acceptance of small effect sizes for biomedical research is contrasted with the rejection of similar effect sizes for psychological research. The Binomial Effect Size Display is used to depict the practical magnitude of an effect size regardless of whether the dependent variable is dichotomous or continuous. Other topics discussed include: (1) the meaning of successful replication, including successful replication of Type II errors; (2) reporting results of replications, including tests of significance; (3) meta-analytic procedures; (4) sampling bias; (5) overemphasis on single values and disregard of details; (6) problems of heterogeneity of method and quality; (7) problems of independence of responses within a single study and within sets of studies; and (8) exaggeration of significance levels. Several benefits of meta-analysis are outlined. It is concluded that many findings of psychological research are neither small nor practically unimportant. Nevertheless, it is also concluded that in the areas of replication and of the cumulation of research findings much remains to be done. Eight data tables and one graph are provided. A 46-item list of references is included. (TJH)
Publication Type: Information Analyses; Reports - Evaluative; Speeches/Meeting Papers
Education Level: N/A
Audience: N/A
Language: English
Sponsor: National Science Foundation, Washington, DC.
Authoring Institution: N/A