The phenomenon in which among the population as a whole, IQ scores have been steadily increasing over several decades is known as the ________.
A) Flynn Effect
B) Peter Principle
C) Barnum Effect
D) Phi Phenomenon

Question

Quizplus · Accepted Answer

The phenomenon described in the question, in which IQ scores have been steadily increasing over several decades, is known as the Flynn Effect. Choice B (Peter Principle) refers to a different phenomenon, in which individuals are promoted to positions beyond their competence. Choice C (Barnum Effect) refers to a psychological bias in which individuals believe vague or general statements about themselves to be highly accurate. Choice D (Phi Phenomenon) refers to a visual illusion in which two or more stationary stimuli appear to be in motion when presented in rapid succession.

The Phenomenon in Which Among the Population as a Whole