The Experts below are selected from a list of 501900 Experts worldwide ranked by ideXlab platform
Hristos Doucouliagos - One of the best experts on this subject based on the ideXlab platform.
-
what meta analyses reveal about the replicability of Psychological Research
Psychological Bulletin, 2018Co-Authors: T D Stanley, Evan C Carter, Hristos DoucouliagosAbstract:Can recent failures to replicate Psychological Research be explained by typical magnitudes of statistical power, bias or heterogeneity? A large survey of 12,065 estimated effect sizes from 200 meta-analyses and nearly 8,000 papers is used to assess these key dimensions of replicability. First, our survey finds that Psychological Research is, on average, afflicted with low statistical power. The median of median power across these 200 areas of Research is about 36%, and only about 8% of studies have adequate power (using Cohen's 80% convention). Second, the median proportion of the observed variation among reported effect sizes attributed to heterogeneity is 74% (I2). Heterogeneity of this magnitude makes it unlikely that the typical Psychological study can be closely replicated when replication is defined as study-level null hypothesis significance testing. Third, the good news is that we find only a small amount of average residual reporting bias, allaying some of the often-expressed concerns about the reach of publication bias and questionable Research practices. Nonetheless, the low power and high heterogeneity that our survey finds fully explain recent difficulties to replicate highly regarded Psychological studies and reveal challenges for scientific progress in psychology. (PsycINFO Database Record (c) 2018 APA, all rights reserved).
Charles I. Abramson - One of the best experts on this subject based on the ideXlab platform.
-
Cemetery Demography as a Tool for Teaching Psychological Research Methods to Undergraduate Students
Comprehensive Psychology, 2014Co-Authors: David G. Thomas, Christopher T. Copeland, Douglas A. Hershey, Charles I. AbramsonAbstract:Abstract Students enrolled in an honors introductory psychology course completed a cemetery demography project intended to stimulate student interest and appreciation for Psychological Research. They generated hypotheses about human population characteristics, collected cemetery data, tested their hypotheses with means comparisons, and wrote about their study in APA format. Responses on a satisfaction survey completed by students at the end of the semester support the conclusion that the cemetery demography class Research project facilitated students' interest and appreciation for Psychological Research.
Douglas A. Hershey - One of the best experts on this subject based on the ideXlab platform.
-
Cemetery Demography as a Tool for Teaching Psychological Research Methods to Undergraduate Students
Comprehensive Psychology, 2014Co-Authors: David G. Thomas, Christopher T. Copeland, Douglas A. Hershey, Charles I. AbramsonAbstract:Abstract Students enrolled in an honors introductory psychology course completed a cemetery demography project intended to stimulate student interest and appreciation for Psychological Research. They generated hypotheses about human population characteristics, collected cemetery data, tested their hypotheses with means comparisons, and wrote about their study in APA format. Responses on a satisfaction survey completed by students at the end of the semester support the conclusion that the cemetery demography class Research project facilitated students' interest and appreciation for Psychological Research.
-
Conceptions of the Psychological Research Process: Script Variation as a Function of Training and Experience
Current Psychology, 1996Co-Authors: Douglas A. Hershey, Thomas L. Wilson, Jennifer Mitchell-copelandAbstract:Individuals' mental representations of the Psychological Research process were investigated. One-hundred eight subjects, representing four different levels of prior training in psychology (undergraduate students to full professors), individually generated a list of events involved in the Psychological Research process. Content analyses of the lists revealed high levels of consensus for specific events that are central to the Research process (e.g., design experiment, collect data). Descriptive analyses of group differences identified developmental trends in both the number and types of events that were generated. The data support the notion that individuals in all four groups possessed scripts of the Psychological Research process. An expert script of the Research process is also presented. Findings are discussed in terms of their implications toward a psychology of science.
T D Stanley - One of the best experts on this subject based on the ideXlab platform.
-
what meta analyses reveal about the replicability of Psychological Research
Psychological Bulletin, 2018Co-Authors: T D Stanley, Evan C Carter, Hristos DoucouliagosAbstract:Can recent failures to replicate Psychological Research be explained by typical magnitudes of statistical power, bias or heterogeneity? A large survey of 12,065 estimated effect sizes from 200 meta-analyses and nearly 8,000 papers is used to assess these key dimensions of replicability. First, our survey finds that Psychological Research is, on average, afflicted with low statistical power. The median of median power across these 200 areas of Research is about 36%, and only about 8% of studies have adequate power (using Cohen's 80% convention). Second, the median proportion of the observed variation among reported effect sizes attributed to heterogeneity is 74% (I2). Heterogeneity of this magnitude makes it unlikely that the typical Psychological study can be closely replicated when replication is defined as study-level null hypothesis significance testing. Third, the good news is that we find only a small amount of average residual reporting bias, allaying some of the often-expressed concerns about the reach of publication bias and questionable Research practices. Nonetheless, the low power and high heterogeneity that our survey finds fully explain recent difficulties to replicate highly regarded Psychological studies and reveal challenges for scientific progress in psychology. (PsycINFO Database Record (c) 2018 APA, all rights reserved).
David G. Thomas - One of the best experts on this subject based on the ideXlab platform.
-
Cemetery Demography as a Tool for Teaching Psychological Research Methods to Undergraduate Students
Comprehensive Psychology, 2014Co-Authors: David G. Thomas, Christopher T. Copeland, Douglas A. Hershey, Charles I. AbramsonAbstract:Abstract Students enrolled in an honors introductory psychology course completed a cemetery demography project intended to stimulate student interest and appreciation for Psychological Research. They generated hypotheses about human population characteristics, collected cemetery data, tested their hypotheses with means comparisons, and wrote about their study in APA format. Responses on a satisfaction survey completed by students at the end of the semester support the conclusion that the cemetery demography class Research project facilitated students' interest and appreciation for Psychological Research.
