Biology Practical

• ALTERNATIVE HYPOTHESIS (1 tailed): There will be a significant positive correlation between height (in cm) and self-reported levels of aggression (on a scale of 1-5)
• AIM: To investigate whether there is a correlation between height and self-reported levels of aggression
• MEASURES OF CONTROL: Standardised questionnaire, objective measurement of height, objective measure of aggression from 1-5, scales reversed to ensure attention.
• PARTICIPANTS: 10 female students, aged 17 to 18
• ETHICAL ISSUES CONSIDERED: Consent form provided and debrief form provided outlining the true aim, participants reminded of their right to withdraw, participants’ data kept anonymous and confidential.
• SAMPLING METHOD: An opportunity sampling method was used
• RESULTS: I chose to conduct a Spearman’s Rho test because I was investigating a correlation between two co-variables (height and aggression) and the level of data was ordinal (height in cm and aggression level out of 5).
• The observed value (0.582) was greater than the critical value (0.442) using a one-tailed test at p < 0.05. This means we accept our alternative hypothesis and reject our null hypothesis, at a confidence level of 5%
• Participants were given a questionnaire asking for their height in cm and how much they agree with 5 different statements ("I get angry when my friends overrule my suggestions"); rated from 1-5