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Across 1. A way of cancelling out order effects by asking some participants to experience the conditions in a different order to other participants 10. Type of experimental method which is carried out in a naturalistic environment, but where the Independent variable is controlled/manipulated 11. A method of testing for a relationship between continuous variables, which can be plotted on a scattergram 13. The variable which you measure 14. The act of making your variables specific and measurable 17. Type of hypothesis which states that there will be no difference or correlation between conditions 18. Type of external validity - the extent to which the research can be applied to a realistic setting 19. What the researcher makes a tally of in an observational study or a content analysis 20. An in-depth analysis of one person or a small group of people, usually due to a unique feature or symptom which they express 21. A type of non-experimental method whereby the researcher relies on the participant to give them the information (e.g. questionnaires)

Down 2. The name given to an extraneous variable which actually affects the outcome of the study 3. Experimental design in which participants are paired up or grouped based on relevant criteria, and then placed in different conditions 4. When participants display behaviours that they considered to show them in a flattering way 5. Sampling method which involves gathering the names into a list and then choosing every nth person 6. A method of controlling variables and avoiding some investigator effects, whereby participants are placed into conditions indiscriminately 7. Measures of _________. Includes range and standard deviation 8. When, during a repeated measures design, participation in one condition affects performance in another condition (e.g. practice or fatigue) 9. Consent must be _______ in order for this study to be ethical 10. A feature of science - the theory must have a clear explanation of how it could be proven wrong 12. Measures of ________ tendency. Includes mean, median and mode 15. Remaining impartial or not biased regarding the outcome of an experiment 16. Correlation ________. A measure of correlation, ranging between -1 and 1