Molly has conducted a study that examines whether exposure to computers increases eyestrain in children. She randomly assigns children to one of four treatment conditions dependent upon computer exposure levels. The children's eyestrain is then tested. Which of the following tests of significance is Molly likely to use?

a. t test
b. Chi square
c. ANOVA
d. Analysis of gain scores


a

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Factorial designs are useful because they

a. allow multiple independent variables. c. examine interaction of variables. b. build in extraneous variables. d. All of these are true.

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According to the authors, dual language learners generally follow a pattern of second language acquisition that largely parallels the development of their first language

Indicate whether the statement is true or false

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Portions of the distribution of statistical outcomes that are unlikely to be obtained if the null hypothesis is true in the population is called the ______.

Fill in the blank(s) with the appropriate word(s).

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Self-instruction is a strategy that helps students ____

a. check themselves to ensure that they have performed targeted behaviors b. learn to use language to guide or talk themselves through a task c. monitor their behavior to make sure they are doing the right thing d. guide their performance by using a checklist of specific questions

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