The sun is located at one _____________ of planetary ellipses
Fill in the blank(s) with the appropriate word(s).
focus or foci
Education
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Erik Erikson developed a theory of the development of children's perspective-taking abilities
Indicate whether the statement is true or false
Education
One of the most common forms of self-punishment includes _______________
a. response cost with a token reinforcement systems b. self-injurious behavior c. stereotypic behavior d. none of the above
Education
Student involvement in the selection of adult services is a good way for students to practice self-determination
Indicate whether the statement is true or false.
Education
Stating a research hypothesis is generally considered to be:
A. essential. B. unnecessary. C. undesirable. D. desirable.
Education