What is the difference between a one-tailed and two-tailed hypothesis? How Would you operationalise a hypothesis?

A one-tailed hypothesis predicts the direction of the results, whereas a two-tailed hypothesis does not. A two-tailed hypothesis simply states there will be an effect of the Independent variable on the dependent variable. To operationalise a hypothesis, the IV and DV need to be specific and clearly identified. E.g.Boys are more aggressive than girls —> 12 years old males will score more highly on an aggression questionnaire than 12 year old females. 

Related Psychology A Level answers

All answers ▸

What is the difference between the behaviourist approach and social learning theory?


Outline and evaluate the biological explanation of aggression (16 marks)


How does Synaptic Transmission work?


Outline and evaluate the biological explanation of depression.


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences