Tao Puts an Object Under a Cover and Her Baby

question 108

Multiple Choice

Tao puts an object under a cover and her baby delightedly finds it a few times. Then she puts it under another cover and her baby looks in the first hiding place. This is:

• A) a sign of a psychological problem.
• B) normal when babies are under 3 months old; it's called the A-not-B error.
• C) normal as babies approach age 1; it's called the A-not-B error.
• D) normal until children are 3 years old; it's called object permanence.

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Definitions:

Regression Line

A line drawn through the set of datapoints that represents the best fit of the data according to a particular statistical criterion, often used in linear regression analysis.

Linear Relationship

A type of association where the change in one variable is directly proportional to the change in another variable.

Significance Level

The likelihood of incorrectly dismissing the null hypothesis in a statistical analysis, commonly represented by alpha, when it in fact holds true.

Regression Line

A straight line in a scatter plot that best fits the data points and shows the relationship between two variables in linear regression analysis.