PSYA01H3 Chapter Notes - Chapter 2: Ecological Validity, Scientific Literacy
Document Summary
It is based on measurements that are objective, valid, and reliable: it can be generalized, it uses techniques that reduce bias, it is made public, it can be replicated. Objective measurements: the measure of an entity or behavior that, within an allowed margin of error, is consistent across instruments and observers. Weight is same regardless of what scale you use. Variable: the object, concept, or event being measured. Operational definitions: are statements that describe the procedures (or operations) and specific measures that are used to record observations. Search through the existing research literature before you make any decisions. Validity: refers to the degree to which an instrument or procedure actually measures what it claims to measure. Creation of valid measures is often time consuming and requires a great deal of testing and revising before the final product is ready for use. Reliability: when it provides consistent and stable answers across multiple observations and points in time.
