A researcher recruits a sample of 25 preschool children for a research study by posting an announcement in a local daycare center describing the study and offering a $10 payment for participation. What kind of sampling is the researcher using?
a. cluster sampling
b. quota sampling
c. simple random sampling
d. convenience sampling
d
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The concept that the quantity of a substance is not altered by reversible changes in its appearance is known as ________
a. reactivity b. synergy c. conservation d. object permanence
Which of the following exemplifies a homozygous trait in a person?
A. Jayden, a mixed-race child, takes after his Asian mother who does not have eyelid creases. B. Briana has curly hair similar to that of her parents. C. Connor has freckles like his father, whereas his mother has clear skin. D. Nyle's blood type is AB, whereas his mother's and father's blood types are A and B, respectively.
Reading a word aloud requires __________.
A. that auditory input project to the right frontal lobe B. that visual input project to the right frontal lobe C. that visual input project though the anterior corpus callosum to the posterior right hemisphere D. that visual input travel from the posterior corpus callosum to the left visual association cortex
Cohort differences are primarily due to
A. unusual life events. B. experiences affecting a generation. C. geographical separation. D. variations of family history.