Maura lives in an institution for retarded citizens. She has been taught how to brush her teeth after a meal, but does so at a very low frequency. A researcher wants to discover how to increase the frequency of Maura's tooth brushing. She gives Maura a star on a chart that is prominently displayed in the bathroom every time she brushes her teeth after a meal. Maura's frequency of tooth brushing increases under these conditions. Then the experimenter stops giving Maura a star for brushing her teeth and records a drop in the frequency of tooth brushing. Finally, the researcher reinstates the star reward condition and records a rise in the frequency of tooth brushing. This study uses the _____ design.
a. case study c. survey
b. experimental d. ABAB
Question 2
In order to estimate the average (mean) weight of all professional football players, an investigator determines the weight of the Dallas Cowboy players. All professional football players constitute a _________.
a. population c. sample
b. parameter d. statistic
Defibrillator. Defibrillators are devices that supply a voltage charge to the heart in the hope of r
Tooth development and eruption are commonly used to assess age in the subadult skeleton. Deciduous (
Typical sequence of tooth eruption for both deciduous and permanent teeth
Teeth أسنان
Rodent Teeth
Mammalian Teeth