64 iniu '68 Q4. Some studies have suggested that there may be a relationship between intelligence and happiness. To investigate this claim, a psychologist used a standardised test to measure intelligence in a sample of 30 children aged 11 years, who were chosen from a local secondary school. He also asked the children to complete a self-report questionnaire designed to measure happiness. The score from the intelligence test was correlated with the score from the happiness questionnaire. The psychologist used a Spearman's rho test to analyse the data. He found that the correlation between intelligence and happiness at age 11 was +0.42.


(a) Write an operationalised non-directional hypothesis for this study.

(b) (Total 4 marks) Identify an alternative method which could have been used to collect data about happiness in this study. Explain why this method might be better than using a questionnaire. ​