PY 355 Lecture Notes - Lecture 6: Face Validity, Squared Deviations From The Mean, Pseudoscience

• School: University of Alabama
• Department: Psychology
• Course: PY 355
• Professor: Craig Walter Cummings

Document Summary

1)a greek philosopher known for his opinion that most of our knowledge is acquired through experience. 2)used to draw conclusions about the reliability and generalizability of one"s findings. 3)the consistency or dependability of a measuring technique. 5)the portion of the total variability in participant"s scores that is related in an orderly, predictable fashion to the variables the researcher is investigating. 6)used to summarize and describe the behavior of participants in a study. 8)numbers assigned are simply labels for characteristics or behaviors. 9)equal differences between the numbers reflect equal differences between participants but there is no true zero point. Interval scale the rank ordering of people"s behaviors or characteristics. Ordinal scale contains a true zero point. Ratio scale cannot perform any mathematical operation. Nominal scale variability in scores due to factors that distort the true score. Error variance and measurement error the extent to which a measure appears to measure what it"s supposed to.