Identify the threats to internal validity illustrated in the examples below. Preschoolers who received treatment for stuttering during the year show a significant improvement in articulation
a. experimental mortality
b. reactive effect of testing
c. statistical regression
d. maturation
e. instrumentation
D
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Refer to Exhibit 7-13. The tabled value of chi square for the corresponding degree(s) of freedom shows 5.99 for the .05 level and 9.21 for the .01 level. The investigator would report that his results are
a. statistically significant at the .05 level. c. Not statistically significant. b. statistically significant at the .01 level. d. None of these are true.
Answer the following statement(s) true (T) or false (F)
Physical development includes all the ways we learn to connect to other individuals, understand our emotions and the emotions of others, interact effectively with others, and express and regulate our emotions.
A skillful speaker:
a. has a genuine desire to help, inform, or inspire b. is self-deprecating c. typically lacks self-confidence d. should be apologetic
The World Health Organization (WHO) and the American Association of Pediatrics
(AAP) encourages: a. Breast feeding exclusively for the first 3 months of life, then switching to bottle feeding for the next 9 months. b. Breast feeding exclusively for the first 2 years of life. c. Breast feeding for a year for all babies unless the mother is an active drug user, HIV positive, or severely malnourished d. Bottle-feeding for the first six weeks since formula can be regulated and we will have a more accurate idea of the child's nutritional intake.