The Matrix Below Describes What Kind of Covariance Structure in a Multilevel

question 13

Multiple Choice

The matrix below describes what kind of covariance structure in a multilevel model?
$\left( \begin{array} { c c c c } \sigma _ { 1 } ^ { 2 } & \sigma _ { 21 } & \sigma _ { 31 } & \sigma _ { 41 } \\\sigma _ { 21 } & \sigma _ { 2 } ^ { 2 } & \sigma _ { 32 } & \sigma _ { 42 } \\\sigma _ { 31 } & \sigma _ { 32 } & \sigma _ { 3 } ^ { 2 } & \sigma _ { 43 } \\\sigma _ { 41 } & \sigma _ { 42 } & \sigma _ { 43 } & \sigma _ { 4 } ^ { 2 }\end{array} \right)$

• A)Variance components
• B)Diagonal
• C)Unstructured
• D)AR(1)

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Definitions:

Top-Down Processing

A perceptual process where an individual's expectations or prior knowledge guide the interpretation of sensory information.

Wrong Idea

An incorrect or misguided thought, belief, or assumption.

Reality

The state of things as they actually exist, outside of perception or interpretation.

Perceptual Set

A tendency to perceive or notice some aspects of the available sensory data and ignore others, influenced by expectation or prior experience.