A typical 2x2 matrix commonly used in an IQ test, with six answer choices displayed below the problem. The top row of the matrix indicates the rule: “the object in the right column is the same as the object in the left column.” Applying this rule to the bottom row, we arrive at the correct answer: the white rhombus.
	Part of: Vyshedskiy A, Dunn R, Piryatinsky I (2017) Neurobiological mechanisms for nonverbal IQ tests: implications for instruction of nonverbal children with autism. Research Ideas and Outcomes 3: e13239. https://doi.org/10.3897/rio.3.e13239