Meta Analysis/ Replication

replication
the practice of repeating an experiment with the goal of getting the same results that were obtained before. it is important because replication is the gold standard for verifying that research is valid

conceptual replication
testing an experiment’s key hypothesis using methods different than the original study (to establish it’s generalizability)

direct replication
repeating an experiment as exactly as possible in order (to determine the validity the original effect)

replication-plus-extension
repeating an experiment while also adding additional variables (to test related hypotheses)

meta analysis
a mathematical method for summarizing results of multiple studies of the same topic
averages effect sizes (r or d) across studies while taking into account sample size

meta-analysis and how it supports replication
need results from studies that did and did not support the null hypothesis in order to do a meta-analysis

cultural psychology
makes generalization mode its primary business. psychologists are interested in how cultural background and environment shapes the way a person thinks, feels, and behaves.