PSYC 3250 Chapter Notes - Chapter 4: Standard Deviation, Scatter Plot, Applied Psychology

• School: University of Guelph
• Department: Psychology
• Course: PSYC 3250
• Professor: David Stanley

Document Summary

Refer to textbook if needed for examples/formulas! In the most general sense, measurement is the process of assigning numbers to objects in such a way that specific properties of objects are faithfully represented by properties of numbers. Psychological measurement is the process of assigning numbers to persons in such a way that some attributes of the person being measured are faithfully reflected by some properties of the numbers. It is important to keep in mind that it attempts to represent some attribute of persons in terms of numbers. They do not attempt to measure the total person but only some specific set of attributes of that person. The task of a psychologist interested in measurement is to devise systematic procedures for translating these differences into quantitative terms. It means that people differ in discernible and potentially measurable ways in their behavior and those differences persist over a sufficiently long time to make their measurement useful.