What is one common cause of lead exposure in children?
a. insulation
b. canned foods
c. heating systems
d. chipping lead-based paint
Answer: d.
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What kind of evidence supports the recommendation against spanking children? a. Spanking frequency is positively correlated with children's misbehavior
b. Spanking frequency is negatively correlated with children's misbehavior. c. Experiments with random assignment show psychological harm from spankings. d. Experiments with random assignment show health problems from spankings.
An independent-measures research study uses a total of 40 participants to compare two treatment conditions. What is the df value for the t statistic for this study?
a. 18 c. 38 b. 19 d. 39
Behavior problems typically addressed in people with dementia include
a. being overly friendly to strangers. b. hypersexuality and agitation. c. failure to assert oneself. d. all of these are behavior problems typically addressed.
Without some correction, such as the Spearman-Brown formula, a correlation measuring split-half reliability will tend to overestimate the reliability for the full test
a. True b. False Indicate whether the statement is true or false