PSYA01H3 Chapter Notes - Chapter 2: Inter-Rater Reliability, Scientific Literacy, Convenience Sampling
Document Summary
Objectivity: assumes that certain facts about the world can be observed and tested independently from the individual who describes them. Subjective: the knowledge of an event is shaped by prior beliefs, expectations, experiences, and moods. 1)it is based on measurements that are objective, valid and reliable. Objective measurements: the measure of an entity or behaviour that, within an allowed margin of error, is consistent across instruments and observers (ex. Weight is measured the same, 1 lb is 1 lb) Although a scale will vary slightly, known as the margin of error. Variable: the object, concept, or event being measured. With a great number of measurement options, it is possible to examine a variable using different techniques. Operational definitions: statements that describe the procedures (or operations) and specific measures that are used to record observations. Validity: the degree to which an instrument or procedure actually measures what it claims to measure.
