Dawn is a graduate student investigating the development of fine motor skills. She selects one group of children and assesses their fine motor skills every six months over a six-year period. In this example, Dawn is using a __________ research design
a) cross-sectional
b) sequential
c) longitudinal
d) cohort
ANS: C, A longitudinal design is one in which participants are followed and assessed as they age.
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In their cross-cultural study of infant development, Callaghan et al. (2011) found that infants in three different cultures displayed about the same amount of __________.
A. active protest B. communicative pointing C. pretend play D. understanding of pictures
Comparing the grade point average of students who took a study skills course to the grade point average of students who did not is an example of inferential statistics rather than descriptive statistics
Indicate whether the statement is true or false
In a repeated-measures design, each subject receives all levels of at least one independent variable
Indicate whether the statement is true or false
When we are considering one possible direction of the difference between means in the hypothesis, we call this a(n) ______.
A. null hypothesis B. one-tailed hypothesis C. alternative hypothesis D. two-tailed hypothesis