Operational Definitions & Levels of Measurement: How Psychology Measures Constructs

Informed Consent & Research Ethics: Milgram, Tuskegee & the Rules of Psychology

The moral foundations of ethical research: informed consent, the Milgram obedience study, the Tuskegee syphilis study, and weighing risks against benefits. #psychology #psychologyundergrad #psychstudent #researchethics #informedconsent

Psychological Theories vs Phenomena: How Psychology Explains Behavior

The difference between phenomena and theories, what scientific theories are for, replication, and why there are always multiple theories for any set of phenomena. #psychology #psychologyundergrad #psychstudent #researchmethods

Operational Definitions & Levels of Measurement: How Psychology Measures Constructs

Psychological measurement explained: constructs, conceptual vs operational definitions, self-report and behavioural measures, and the four levels of measurement (nominal, ordinal, interval, ratio). #psychology #psychologyundergrad #psychstudent #researchmethods

Reliability and Validity: How Psychologists Know Their Measures Work

Reliability (test-retest, internal consistency, inter-rater) and validity (face, content, criterion, discriminant) of psychological measurement, explained with clear examples. #psychology #psychologyundergrad #psychstudent #reliabilityandvalidity #researchmethods

Experimental Design: Between-Subjects vs Within-Subjects & Random Assignment

How to design an experiment: between-subjects vs within-subjects, random assignment, control conditions, carryover effects, and counterbalancing. #psychology #psychologyundergrad #psychstudent #experimentaldesign #researchmethods