Nine-month-old Todd and ten-month-old Roy are sitting in the play area together at their daycare center. They smile at each other and present and accept toys from each other. Their behavior is an example of __________.
A. modeling
B. infant sociability
C. interactional synchrony
D. mutual regulation
Answer: B
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a. True b. False Indicate whether the statement is true or false
An experimental study is conducted examining the relationship between sleep deprivation and depression. Participants are kept awake by the experimenters for different amounts of time, and then are assessed on various symptoms of depression. In this study, the number of hours that a participant stays awake is the ____
a. random variable b. independent variable c. dependent variable d. control variable
A _____ is a complete group of interest to researchers, from which a sample is drawn for an experiment
A) random sample B) segment C) population D) stratified sample
Texting with your thumbs is an example of _____ learning that becomes _____ over time.
A) implicit; habituated B) explicit; implicit C) implicit; explicit D) explicit; operant