Research by Chartrand & Bargh (1999) suggests that when someone else mimics our
ID: 3489633 • Letter: R
Question
Research by Chartrand & Bargh (1999) suggests that when someone else mimics our behavior during an interaction, it generally causes us to like that person more (e.g., if you rub your chin and the other person mimics your chin-rubbing). A group of Dutch researchers wanted to see what the financial consequences are of this phenomenon. A waitress was instructed to repeat some customers’ food orders word for word (mimicry condition), whereas other customers’ orders were not repeated word for word. Instead, she simply confirmed that she understood the order (e.g., “coming right up!”). Other than that, the waitress was instructed to behave in the same way towards all customers. The dependent variable was the tip received from each customer. The researchers predicted that tips would be larger in the mimicry condition than in the control condition. The data is presented below.
1 Explain in words what the null hypothesis is and what the research hypothesis is
2 Conduct an independent samples t-test (one-tailed), and show all of your calculations
You will find all the formulas needed in the notes from my most recent lecture
3 Did the results support the research hypothesis? Explain why the results did or did not support the research hypothesis
Mimicry Condition Customer 1 Customer2 Customer 3 Customer 4 Customer5 lip (%) 23 20 21 19 25 Control Condition Customer 1 Customer2 Customer 3 Customer 4 Customer5 Customer 6 16 15 18 17 18 20Explanation / Answer
Hypothesis: There will be a difference in the tip between the mimicry condition and the control condition
Null-Hypothesis: There will be no difference in the tip between the mimicry condition and the control condition
Table 1
Mean and Independent sample t-test value of tip among the two groups
Mimicry group (n=6)
Control group
(n=6)
t
Mean
Mean
Tip
22
17.33
3.72**
Note **p < 0.01
The result supported the research hypothesis. From the table 1, we can see that there is a significant difference between the two groups, where t=3.72, p < 0.01. The mean of the group shows that mimicry group (mean=22) got a higher tip than the control group (mean=17.33).
Mimicry group (n=6)
Control group
(n=6)
t
Mean
Mean
Tip
22
17.33
3.72**
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