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If the correlation between separate administrations of the test is high (e.g. 0.7 or higher as in this Cronbach's alpha-internal consistency-table [6]), then it has good test–retest reliability. The repeatability coefficient is a precision measure which represents the value below which the absolute difference between two repeated test results ...
Reproducibility, closely related to replicability and repeatability, is a major principle underpinning the scientific method.For the findings of a study to be reproducible means that results obtained by an experiment or an observational study or in a statistical analysis of a data set should be achieved again with a high degree of reliability when the study is replicated.
Study replication rates were 23% for the Journal of Personality and Social Psychology, 48% for Journal of Experimental Psychology: Learning, Memory, and Cognition, and 38% for Psychological Science. Studies in the field of cognitive psychology had a higher replication rate (50%) than studies in the field of social psychology (25%). [77]
In engineering, science, and statistics, replication is the process of repeating a study or experiment under the same or similar conditions to support the original claim, which is crucial to confirm the accuracy of results as well as for identifying and correcting the flaws in the original experiment. [1]
Inter-method reliability assesses the degree to which test scores are consistent when there is a variation in the methods or instruments used. This allows inter-rater reliability to be ruled out. When dealing with forms, it may be termed parallel-forms reliability. [6]
Inter-rater reliability: Not applicable Designed originally as a self-report scale; parent and youth report correlate about the same as cross-informant scores correlate in general Test-retest reliability: Adequate r = .96 over 1 week. [1] Data on test-retest reliability over longer periods are needed. Repeatability Not published
[3] [4] The results of the Reproducibility Project might also affect public trust in psychology. [ 9 ] [ 10 ] Lay people who learned about the low replication rate found in the Reproducibility Project subsequently reported a lower trust in psychology, compared to people who were told that a high number of the studies had replicated.
Inter-rater reliability: Good The interviewer vs. self-rated correlation ranges from .83 and .84 [2] Test-retest reliability (stability Good Reported as .83 [2] Repeatability Not published No published studies formally checking repeatability PHQ-15: Norms Excellent Two large studies with convenience and random samples used.