Four-year-olds who are matched on a number of characteristics are randomly assigned to one of three groups. The first group has individual interaction in a lab room with a young adult who promises a wonderful art kit to pass the time before she gets back to give them a test. The young adult, however, returns with a small box of crayons and paper, apologizing for not being able to deliver with what was promised. Several minutes pass by before she returns to give the child a marshmallow. The child is told that if he/she waits to eat the marshmallow until the experimenter returns, the child may have two marshmallows ("marshmallow test"). In the second group, the young adult makes her art-kit promise, but delivers on it! Kids in this group have the marvelous kit to enjoy until the "marshmallow test." In the third group, kids spend time in the room equal to group one and two's "art time" and are then given the marshmallow instructions. The young adult records, in each group, the amount of time that elapses before ingestion of the marshmallow (should it occur) or if presentation of two marshmallows.
Identify the research method that best describes each of the examples of research studies that follow. (kinship study, cross-sequential, cross-sectional, correlational, longitudinal, microgenetic, experiment, etc.).
This is an experiment study... View the full answer