In an Experiment Described in the Science Versus Pseudoscience Box

question 314

Multiple Choice

In an experiment described in the Science Versus Pseudoscience box "Can a DVD Program Your Baby to Be a Genius?" which was the control condition?

• A) Children were not exposed to the video, and parents were not instructed to try to teach them the words.
• B) Children were not exposed to the video, and parents were instructed to try to teach them some words featured in the video.
• C) Children watched the video by themselves at least five times a week over a four-week period.
• D) Children watched the video with a parent at least five times a week over a four-week period.

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Definitions:

Leverages

In statistics, the influence individual data points have on the regression coefficients in a linear regression model.

T-Statistic

A type of test statistic used in Student's t-test, calculated as the difference between an observed sample mean and a known population mean, divided by the standard error.

Multiple Regression

A statistical technique that uses multiple independent variables to estimate the outcome of a dependent variable.

Least-Squares Regression

A statistical method used to determine the line of best fit by minimizing the sum of the squares of the differences between observed and predicted values.