If an Rh-negative mother is injected with Rh immunoglobulin within ____ after delivery of an Rh-positive baby, she will not develop the antibodies
Fill in the blank(s) with correct word
72 hours
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Compared to true experiments, MOST correlational studies are low in ____
a. internal validity b. external validity c. construct validity of the cause d. construct validity of the effect
Carmen entered the first grade when she was still five years old, and she did not turn six until December. Roxanne turned six the summer before the first grade started. Which of the following statements is true?
a. Carmen will progress more slowly than Roxanne in reading and math. b. Carmen and Roxanne will make similar magnitudes of gains in reading and math. c. Carmen will progress more slowly than Roxanne in reading, but they will show similar gains in math. d. Carmen will gain less than if she had been placed in kindergarten instead of first grade.
The International Labor Organization (ILO) has estimated that about children and adolescents are employed worldwide, and that ____ of them are in developing countries
a. 73 million; 95% b. 400 million; 75% c. 600 million; 55% d. 800 million; 35%
In an experiment, the variable that is measured is the variable
a. independent b. control c. empirical d. dependent e. operational