Listening test 5 part 5 Questions 21–26Complete the table below.Write NO MORE THAN TWO WORDS for each answer. RESEARCH METHODS Strengths Weaknesses IN THE LABORATORY e.g. medical research The environment is 22. It is easier to isolate key variables.The researcher can use 23. Constraints affect the ecological validity.Subjects must agree to participate, sothere may be a possible distorting effecton 24. IN THE FIELD or 21. setting, e.g. family research Good ecological validity There may be unwanted effects, e.g.25. in a sleep experiment.26. the research can be difficult. Time's up
