MEMORY PERSPECTIVES:DATA ANALYSIS

Week 9 Practical

WEEK 8 PRACTICALMEMORY PERSPECTIVES

WEEK 1

WEEK 2

WEEK 3

WEEK 4

WEEK 5

WEEK 6

WEEK 7

WEEK 8

WEEK 9

WEEK 10

LECTURE 1 PRACTICAL

NONPARAMETRICS 1 1ST PRACTICAL

NONPARAMETRICS 2 1ST ANALYSIS IN SPSS

SAMPLING DISTRIBUTIONS

1ST ANALYSIS BY HAND

HYPOTHESIS TESTING

2ND PRACTICAL

RELATED T-TEST

2ND ANALYSIS IN SPSS

INDEPENDENT T-TEST

INDEPENDENT ANOVA

DEPENDENT ANOVA

2ND ANALYSIS BY HAND

3RD PRACTICAL

3RD ANALYSIS IN SPSS

NO LECTURE NO PRACTICAL

No practical

LEARNING OUTCOMES

BY THE END OF THE SESSION, YOU SHOULD BE ABLE TO:

Use SPSS to test the second research question in the memory perspectives practical and interpret the output.

Use SPSS to test the first research question in the memory perspectives practical and interpret the output.

Make a start on writing up your RESULTS and DISCUSSION sections for your lab report.

MEMORY PERSPECTIVES

RESULTS

The first 2 columns show subject id and group membership.

The last two columns show recall for LIST A (BURGLAR) and LIST B (BUYER).

MEMORY PERSPECTIVES

(Perspect 0 = BURGLAR; Perspect 1 = BUYER)

RESULTS

In SPSS, Independent t-test may be found under analysis >

compare means > independent-samples t test.

Independent t-testRATIO + BETWEEN Ss + 2 GROUPS

Q1: Do ‘BURGLARS’ and ‘BUYERS’ have different levels of recall for LIST A (burglar relevant items)?

MEMORY PERSPECTIVES

RESULTS

SPSS would like to know what the test variable (DV) is. At the moment, we’re just interested in LIST A recall.

We also need to define our ‘grouping variable’ (IV) which is BURGLAR (0)

or BUYER (1).

We have to tell SPSS that our first group is assigned to the number

value 0 and the second group to the number value 1.

Independent t-testRATIO + BETWEEN Ss + 2 GROUPS

Q1: Do ‘BURGLARS’ and ‘BUYERS’ have different levels of recall for LIST A (burglar relevant items)?

MEMORY PERSPECTIVES

RESULTS

Levene’s test assesses whether our two groups have homogeneity of variance. If Levene’s is NON-SIGNIFICANT we assume equality.

Independent t-testRATIO + BETWEEN Ss + 2 GROUPS

Q1: Do ‘BURGLARS’ and ‘BUYERS’ have different levels of recall for LIST A (burglar relevant items)?

Now for the t-test: t(151) = 6.64, p < .001.

MEMORY PERSPECTIVES

RESULTS

In SPSS, Independent t-test may be found under analysis >

compare means > independent-samples t test.

Independent t-testRATIO + BETWEEN Ss + 2 GROUPS

Let’s repeat this exercise for the second research question.

MEMORY PERSPECTIVES

Q2: Do ‘BURGLARS’ and ‘BUYERS’ have different levels of recall for LIST B (home-buyer relevant items)?

RESULTS

Now, we’re interested in LIST B (buy_fea) recall rather than LIST A

(burg_fea) recall, so switch these test variables around.

Everything else can stay as it is.

Independent t-testRATIO + BETWEEN Ss + 2 GROUPS

MEMORY PERSPECTIVES

Q2: Do ‘BURGLARS’ and ‘BUYERS’ have different levels of recall for LIST B (home-buyer relevant items)?

RESULTS

Once again, Levene’s test comes through for us, supporting equal variance between the burglars and the buyers.

Independent t-testRATIO + BETWEEN Ss + 2 GROUPS

And the t-test: t(151) = -3.90, p < .001

MEMORY PERSPECTIVES

Q2: Do ‘BURGLARS’ and ‘BUYERS’ have different levels of recall for LIST B (home-buyer relevant items)?

RESULTS

Q2: Do ‘BURGLARS’ and ‘BUYERS’ have different levels of recall for LIST B

(home-buyer relevant items)?

Q1: Do ‘BURGLARS’ and ‘BUYERS’ have different levels

of recall for LIST A (burglar relevant items)?

LIST A BURGLARS > BUYERS

0

2

4

6

8

10

12

List A (Burglar) List B (Buyer)

Memory Perspective

List

Rec

all

BURGLARSBUYERS

MEMORY PERSPECTIVES

LIST B BURGLARS < BUYERS

What implications do these two hypotheses have for the memory

perspectives account?

LEARNING OUTCOMESMEMORY PERSPECTIVES

BY THE END OF THE SESSION, YOU SHOULD BE ABLE TO:

Use SPSS to test the second research question in the memory perspectives practical and interpret the output.

Use SPSS to test the first research question in the memory perspectives practical and interpret the output.

Make a start on writing up your RESULTS and DISCUSSION sections for your lab report.

MEMORY PERSPECTIVES

THERE IS NO PRACTICAL SESSION IN WEEK 10

CLARIFY ANY OUTSTANDING ISSUES YOU HAVE WITH YOUR TUTORS NOW...

DISCUSSION

GET TOGETHER IN GROUPS OF THREE OR FOUR AND REFLECT ON TODAY’S EXPERIENCE USING THE FOLLOWING QUESTIONS

What are the flaws in this study?

What do the inferential statistics NOT tell me

about my results?

Could I have made one-tailed hypotheses? How would this have changed

the p value?

MEMORY PERSPECTIVES