Calculating the Pearson correlation (r) involves calculating SSX, SSY, SPXY, and r. How many of these four things can be a negative number?
a. 0
b. 1
c. 2
d. 3
c. 2
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At what age do most toddlers begin to engage in symbolic play?
A) ?6 months B) ?12 months C) ?18 months D) ?24 months
As applied to a model of memory, a ____ is a set of labeled relations between nodes
a. network b. prime c. schema d. concept
Which of the following best reflects the focus of critical constructivism?
a. When the teacher has to criticize a student's work, the emphasis is on giving constructive criticism. b. To maximize instructional efficiency, a teacher breaks a lesson down into small units, reinforces students for giving correct responses, and gives them a test before allowing them to proceed to the next unit. c. Because students of color often have lower test scores and grades, a teacher decides to give them less difficult tasks in order to strengthen their self-esteem. d. A teacher strives to minimize his or her expectations about what students can accomplish based on their racial, ethnic, or SES background.
Research on the links between family, school, peer, work contexts has shown that an important mediator of adolescent experiences is:
a. Adult supervision b. Peer pressure c. School support d. Friendship networks