Practical Flashcards
Practical: Levels of measurement (4)
Nominal- category data
Ordinal- in order
Interval- equal gap between each unit of measurement
Ratio- has true 0
Practical: Hypothesis (6)
Directional
Non-directional
Experimental
Research
Alternative
Null
Practical: Rationale of Practical (1)
2D:4D digit ratio has been linked to prenatal exposure to testosterone
Practical: Aim (1)
To see whether there was a correlation between 2D:4D digit ratio (cm) and self reported aggression level (on a scale of 1-10)
Practical: Sample/ Sampling Method (4)
13 total: 1 male & 12 female
Caucasian aged 16-17
From Bristol, England
Opportunity sample
Practical: Research Hypothesis (2)
There will be a significant relationship between 2D:4D ratio and self reported aggression.
Practical: Null Hypothesis (2)
There will be NO significant relationship between 2D:4D digit ratio and self reported aggression. Any relationship will be due to chance.
Practical: Operationalised Variables a+b (4)
a. Levels of aggression as measured by a self reported score out of 10 based on the past month
b. 2D:4D digit ratio as calculated by dividing length of index finger by length of ring finger (of right hand)
Practical: Two Methodological Strengths a+b (6)
a. Ethical implications and gained informed consent e.g. …
b. Used reliable method of ratio measurements as instructions were standardised e.g. …
Practical: Inferential Test Used (3)
Spearman’s Rho
- correlational test
- ordinal level of measurement
- repeated measure
Practical: One Weakness (3)
Inaccurate measurements of the fingers for the digit ratio.
Also not the mean value was used just the first result.
Subjectivity as participant were aware of the aim
Practical: How could you overcome weakness? (3)
Use scanned images to get a better measurements of the digits.
Repeated measurements to achieve mean.
Have someone else double check your measurements.
