6. Identify each of the following as a paired-samples design or an independent-samples design. For each, identify the in

[answerhappygod]

6 Identify Each Of The Following As A Paired Samples Design Or An Independent Samples Design For Each Identify The In 1 (47.24 KiB) Viewed 53 times

6. Identify each of the following as a paired-samples design or an independent-samples design. For each, identify the independent variable, its levels, and the dependent variable. a. [5 pts.] A developmental psychologist wants to determine if watching different videos has an effect on children's verbal knowledge. She recruits 20 3-year-olds into her study and ran- domly picks 10 of them to watch Sesame Street and the other 10 to watch Baby Einstein. After watching the programming, she asks them to identify the letters in the alphabet that they know. b. [5 pts.] Researchers recruited 30 married couples to participate in a marriage improvement intervention. Each member of the couple is assigned to either a gratitude intervention or a mind- fulness intervention. After, each spouse completes a marriage satisfaction survey to see which intervention was more effective. c. [5 pts. Researchers are interested in investigating the effect of caffeine on cognitive abilities in undergraduate students. They recruit 30 undergraduate students and randomly assign them into two groups. One group is asked to drink 400 mg of caffeine an hour before completing a cognitive task and another group is asked to drink one cup of water before completing the same cog- nitive task. Then their scores on the cognitive test is analyzed. d. [5 pts.] Researchers are interested in tracking the development of motor skills in a group of twins. They first measure the mo- tor skills abilities of a group of twins at the age of 10 years old and then track the motor development of the same twins and measure it again when they are 15 years old. e. [5 pts.] The amount of oxygen consumption was measured in six individuals over two 10-minute periods while sitting with their eyes closed. During one period, they listened to an exciting adventure story; during the other, they heard restful music.