Factors that play a role in selecting a test instrument including _______ variables,such as age and verbal ability,and __________ variables,such as setting,timing,finances,and legal involvement.

Child Variables

Factors or characteristics related to children that can influence outcomes in studies or interventions, such as age, gender, or developmental stage.

Contextual Variables

Factors that influence the setting or environment in which behaviors, events, or data are situated, affecting their interpretation.