PSY 3307 Lecture Notes - Lecture 11: Inter-Rater Reliability, Level Of Measurement, Standard Deviation

• School: University of Ottawa
• Department: Psychology
• Course: PSY 3307
• Professor: Elizabeth Kristjansson

Document Summary

Internal consistency: the degree to which the items vary together. Coefficient alpha: the amount that two tests/items are measuring the same construct, also referred to as cronbach"s alpha. For the ones which are appropriate describe how you would do it. Scorer reliability: the extent to which people agree on scoring the same measures, same as inter-rater reliability. In the final project there is no scorning involved of subjective answers so we will not need this. Two people coding a transcript and then comparing two peoples scores. Things that effect reliability: variability in sample: testing third year students is not variable because we are all similar, a first year psychology course is variable because there are a lot of different people. Greater differences means there is more consistency in measurement. You can be more precise with kindergarteners, less precise with university students.