EBK RESEARCH METHODS FOR THE BEHAVIORAL
5th Edition
ISBN: 9780100546479
Author: Forzano
Publisher: YUZU
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Chapter 14, Problem 7E
Identify the four phases that make up an ABAB (reversal) design, and describe how the participant’s behavior is expected to change each time the phase is changed if the study is successful.
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Does posting calorie content for menu items affect people’s choices in fast-food restaurants? According to results obtained by Elbel, Gyamfi, and Kersh (2011), the answer is no. The researchers monitored the calorie content of food purchases for children and adolescents in four large fast-food chains before and after mandatory labeling began in New York City. Although most of the adolescents reported noticing the calorie labels, apparently the labels had no effect on their choices. Data similar to the results obtained show an average of M = 786 calories per meal with s = 85 for n = 100 children and adolescents before the labeling, compared to an average of M = 772 calories with s = 91 for a similar sample of n = 100 after the mandatory posting.
Use a two-tailed test with a α .05 to determine whether the mean number of calories after the posting is significantly different than before calorie content was posted.
3. Calculate r 2 to…
Please show your work for part a- d
Tim is interested in studying whether Cognitive Behavioural Therapy (CBT) is an effective treatment for Obsessive Compulsive Disorder (OCD). Six people who were diagnosed with OCD participated in Tim's study, where he recorded the number of times they washed their hands per day for one month. They were then given a three week intensive CBT program before their hand-washing was monitored for another month. The average number of times per day each participant washed their hands over the two months of observation are as follows:
Participant
Month 1
Month 2
1
11
6
2
8
5
3
14
17
4
10
10
5
22
11
6
15
10
Compute the appropriate statistic to determine whether the program was effective and use this information to fill in the blanks:
Q1. revealed that the number of times per day participants washed their hands following the CBT program was Q2. compared to the number of times per day participants washed their hands before the…
Chapter 14 Solutions
EBK RESEARCH METHODS FOR THE BEHAVIORAL
Ch. 14.1 - Describe the goal of single-case research and...Ch. 14.2 - Describe the purpose of a phase in a single-case...Ch. 14.2 - Prob. 3LOCh. 14.3 - Describe the structure of an ABAB reversal design...Ch. 14.3 - Identify the strengths and weaknesses of an ABAB...Ch. 14.3 - Explain the circumstances in which an ABAB...Ch. 14.4 - Describe the structure of a multiple-baseline...Ch. 14.4 - Identify the strengths and weaknesses of a...Ch. 14.5 - Identify the general advantages and disadvantages...Ch. 14.5 - Describe the strengths and weaknesses of the...
Ch. 14 - Prob. 1ECh. 14 - Prob. 2ECh. 14 - Traditional statistics (means, variances, and...Ch. 14 - What is the primary factor that determines when it...Ch. 14 - What pattern of results is needed to provide...Ch. 14 - Why is it necessary to have a stable pattern...Ch. 14 - Identify the four phases that make up an ABAB...Ch. 14 - In general, how does a phase-change design like...Ch. 14 - Explain why an ABAB reversal design is...Ch. 14 - Prob. 10ECh. 14 - Prob. 11ECh. 14 - Prob. 12ECh. 14 - Prob. 13ECh. 14 - Prob. 14ECh. 14 - Suppose (hat a complex therapy procedure contains...Ch. 14 - Prob. 1EACh. 14 - Suppose a researcher uses a multiple-baseline...Ch. 14 - Suppose that a complex therapy procedure contains...
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