2 Construct vs. Variable

measured or perceived vs. reality

		Reality
		True	False
Measured	True	Correct	Type 1 error (False positive)
	False	Type 2 error (False Negative)	Correct

Measurement Error

Moderator vs. Mediator

Validity

Reliability vs. Validity

picture from (Irvine 2019)

Constructs are things we make up, define clearly

Phenomena are observable variables