PSYC 3380 Lecture Notes - Lecture 7: Replication Crisis, Item Response Theory
18 Jul 2016
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Varying results leads people to not really know what to believe replication crisis in brief. Replications have low success rates and are infrequently published. High profile replication reports show that many studies fail to be replicated. There is no such thing as a perfect study. Measurement error is universal in the social sciences and can be characterized as random variation in study observations. Measurement error is typically indexed with its inverse, reliability, which indicates how much stability or consistency is present in data reliability and replications. The connection between replications and score reliability would appear natural. Misconceptions about the effects of unreliability on observed associations can make the importance of reliability in replications unclear conclusions. Substantial variability in replication correlations can be expected as a result of measurement error alone. Expect variability in results due to different sources of error. Researchers can reduce the range of replication correlations by increasing sample size and reliability.
