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Dec 15, 2023 · In psychology research, validity refers to the extent to which a test or measurement tool accurately measures what it’s intended to measure. It ensures that the research findings are genuine and not due to extraneous factors.
- What Is Measurement?
- Psychological Constructs
- Operational Definitions
- Levels of Measurement
Measurement is the assignment of scores to individuals so that the scores represent some characteristic of the individuals. This very general definition is consistent with the kinds of measurement that everyone is familiar with—for example, weighing oneself by stepping onto a bathroom scale, or checking the internal temperature of a roasting turkey...
Many variables studied by psychologists are straightforward and simple to measure. These include sex, age, height, weight, and birth order. You can often tell whether someone is male or female just by looking. You can ask people how old they are and be reasonably sure that they know and will tell you. Although people might not know or want to tell ...
An operational definition is a definition of a variable in terms of precisely how it is to be measured. These measures generally fall into one of three broad categories. Self-report measures are those in which participants report on their own thoughts, feelings, and actions, as with the Rosenberg Self-Esteem Scale. Behavioural measures are those in...
The psychologist S. S. Stevens suggested that scores can be assigned to individuals in a way that communicates more or less quantitative information about the variable of interest (Stevens, 1946). For example, the officials at a 100-m race could simply rank order the runners as they crossed the finish line (first, second, etc.), or they could time ...
- Paul C. Price, Rajiv S. Jhangiani, I-Chant A. Chiang, Dana C. Leighton, Carrie Cuttler
- 2015
Oct 8, 2020 · In the present study, we address this question by identifying characteristic markers of complexity in the dynamics of psychological observables as measured by repeated self-ratings of social, emotional, physiological, psychological, and behavioral states.
- Merlijn Olthof, Fred Hasselman, Anna Lichtwarck-Aschoff
- 2020
In this post, learn about face, content, criterion, discriminant, concurrent, predictive, and construct validity. If you want to learn about experimental validity, read my post about internal and external validity. Those types relate to experimental design and methods.
Aug 9, 2014 · use of operational definitions should involve best practices related to three conceptual tasks: (a) clarificationy in which researchers reflect on and clarify their potential operationalizations, (b) specification , in which researchers specify and take account of the difference between
Jan 1, 2014 · A rating scale consists of a number of ordered categorical recordings of an item. The verbal descriptive scale (VDS), also called the verbal rating scale , consists of a discrete number of verbally described ordered response categories, or description of criteria, grading the level of responses.
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Define measurement and give several examples of measurement in psychology. Explain what a psychological construct is and give several examples. Distinguish conceptual from operational definitions, give examples of each, and create simple operational definitions.
