Correlation of stroop test

Question 1

state the covariables, operationalised

Answer 1

creativity score on Northwestern creativity scale out of 116
stroop effect time taken to complete stroop test in seconds

Question 2

operationalised alternative hypothesis

Answer 2

there will be a significant relationship between score on northwestern creativity scale (0-116) and time to complete stroop test in seconds

Question 3

is the alternative hypothesis directional or non- directional

Answer 3

non- directional

Question 4

justify/ explain why used this directional/ non directional hypothesis

Answer 4

way in which stroop test is operationalised varies significantly between studies, therefore I have chosen a non-directional hypothesis as we are not directly replicating previous research.

Question 5

null hypothesis

Answer 5

there will be no significant relationship between northwestern creativity scores and time to complete stroop test and any difference that does occur will be due to chance.

Question 6

main characteristics of sample group

Answer 6

30 ps
male + female
16-18 year olds at bilborough college

Question 7

sample method?

Answer 7

opportunity sampling

Question 8

2 advantages of sampling method

Answer 8

. less time consuming than volunteer as we dont need to create advertisement, approach people available on the day
.more affordable than other methods as bilborough students aren’t paid.

Question 9

2 limitations of our sampling method

Answer 9

. available doesnt mean willing to participate
.inevitably bias sample drawn from small area of bilborough college- canteen- unlikely to be representative of whole population.

Question 10

Appropriate descriptive statistics for each variable

Answer 10

creativity- median and range
stroop effect- median and standard deviation

Question 11

why your choice of descriptive statistics has been appropriate

Answer 11

creativity is measured on northwestern scale 0-116 so ordinal data so median is appropriate central tendency. use median as measure of dispersion so range is most appropriate.
stroop effect is time taken to complete test in seconds, which is ratio data so I have chosen mean as most appropriate and then SD as measure of dispersion as I have already calculated mean, which is needed for SD.

Question 12

The appropriate graph and why

Answer 12

scatter graph because I have have conducted a correlation with the covariables being stoop effect time and creativity score. Scatter graph will show the strength of relationship between…

Question 13

which inferential statistical test and why

Answer 13

spearman’s rank because looking at the relationship between… As all bilborough students did both the northwestern and stroop test, the data is related.The level of measurement is at least ordinal as creativity is on a subjective scale 0-116 and strrop in in seconds.

Question 14

summarise the findings

Answer 14

mean- 19.71
median- 54
range- 44
SD- 9.49
calculated value- 0.53313

Question 15

conculsions

Answer 15

as the calculated value was 0.53313, more than the critical value 0.390, findings are significant.
At p<0.05, accept the alternative hypothesis, which was that there will be significant relationship between…

Question 16

issues of reliability

Answer 16

.inconsistent method of timing stroop test when practising- dealt with by using online stroop test automatically timed.
.not following standardised procedure, order of carrying out creativity and stroop test. dealt with by deciding to do creativity test first…

Question 17

why was research reliable

Answer 17

.standardised procedure
.operationalised variables

Question 18

issues of validity

Answer 18

how to measure creativity- dealt with by using well established online test.
timing stroop test with stopwatch inaccurate, dealt with by using online test students press finish to stop timer.

Question 19

why was research valid

Answer 19

. assessed content validity by asking our psychology teacher to asses way in which we operationalised creativity and strrop… agreed good content validity.
.stroop is a well established psychological phenomenon, the test is designed to measure strrop, so good construct validity.

Question 20

ethical issues

Answer 20

fully informed consent- created consent forms…
right to withdraw- stated this in both brief statement and debrief.

Question 21

ammendments to improve study

Answer 21

gather year 12 participants not just year 13 for better population validity
use different measure of creativityto get a more accurate representation of the construct of validity eg, different questionnaire
improve test retest by asking ps to complete stroop and creativity test again to see if gain similar results.