the biological correlational practical (pack 2)

Question 1

title

Answer 1

a correlational study to investigate whether there is a relationship between testosterone levels and aggression levels

Question 2

what is testosterone

Answer 2

a hormone and androgen which is a chemical that develops and maintains male characteristics

Question 3

what can antenatal exposure to testosterone do?

Answer 3

lead to increased competitive aggression

Question 4

how is testosterone and aggression normally tested for an experiment?

Answer 4

with rats
cut of testicles and compare to rats with testicles

Question 5

what did Mazur find on testosterone

Answer 5

indicated that throughout teenage years males testosterone increases and there is a strong positive correlation with aggressive behaviour and inter-male fighting

Question 6

aim

Answer 6

to investigate, using a correlational method, whether testosterone levels can be linked to aggression levels

Question 7

what was the sampling method

Answer 7

opportunity

Question 8

what were 4 procedural steps in the practical?

Answer 8

1. used the 4D/2D ratio which would imply our testosterone levels
2. The buss-perry questionnaire requires the ppt to rate themselves on a 5 point scale on each item in terms of how characteristic they are of you

Question 9

what did the scatter diagram tell us about our data in this study?

Answer 9

that there is no significant correlation between testosterone and levels of aggression

Question 10

what do the results suggest about the method

Answer 10

that the 4D/2D method is only an estimate and cannot be relied on

anomalies can skew our data

Question 11

what descriptive statistic did we use to collect the data?

Answer 11

scatter diagram

Question 12

what inferential statistic was used for this practical

Answer 12

spearman’s rho

Question 13

what are the 3 reasons why spearman’s rho was the correct test?

Answer 13

correlational
related
ordinal data

Question 14

what was the results of the spearman

Answer 14

0.03

Question 15

what does 0.03 mean for correlational coefficient

Answer 15

that it is very weak

Question 16

what are two strengths for this practical?

Answer 16

quantitative data
easier to read and analyse, is objective and more scientific. Also, increases scientific credibility

also could be considered ethical as it is only correlational, so protection from harm. Follows BPS guidelines…increases scientific credibility

Question 17

what are two weaknesses of this practical?

Answer 17

it could be considered deterministic as it is suggesting that if you were exposed to high levels of testosterone, then you would be more aggressive

generalisability is low as the sample used is opportunity, so there is a certain type of person going to that place. All students aged 16-18, therefore, cannot generalise to wider population

Question 18

what is the research hypothesis for the practical?

Answer 18

There will be a significant correlation between testosterone levels measured using the 4D/2D ratio, averaged across both hands and aggression levels, measured using the buss-Perry aggression questionnaire ‘a five point likert scale 1 being extremely uncharacteristic of me and five being extremely characteristic of me

Question 19

how do you measure using the 4D/2D method?

Answer 19

using a ruler, measure your ring finger from the crease nearest the palm to the tip, down the middle of your finger. Use mm.

repeat this for your index finger

using a calculator, divide the length of your ring finger by the length of your index finger. Enter results and round to 2 dp

repeat steps 1-3 for your left hand

find the mean 4D:2D ratio by adding the two ratios for right and left and divide by 2

Question 20

what was my average 4D:2D digit ratio

Answer 20

1.01 mm

Question 21

what was my total buss-Perry aggression scores

Answer 21

107.0