Which of the Following Is a Characteristic of Rett's Disorder

question 36

Multiple Choice

Which of the following is a characteristic of Rett's disorder?

• A) The loss of previously acquired skills, such as the ability to walk and to communicate after three years of apparently normal development
• B) Stereotyped behavior from birth
• C) A loss of hearing at birth
• D) A range of physical, behavioral, motor, and cognitive abnormalities that begin after a few months of normal development

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Definitions:

Correlation

A statistical measure that expresses the extent to which two variables change together, indicating the strength and direction of their relationship.

MANOVA

Multivariate Analysis of Variance, a statistical test used to compare the means of multiple dependent variables across one or more independent variable groups.

ANCOVA

Analysis of Covariance, a statistical technique that combines ANOVA and regression to analyze the impact of one or more categorical independent variables on a continuous dependent variable, while controlling for one or more covariates.

Dependent Variable

The outcome variable or the predicted variable in a regression equation.