Q.Identify the most appropriate method of enquiry for the following research problems.

Each research problem here calls for a different method, depending on whether it asks about cause-effect, opinion, individual differences, natural behaviour, or a single unique case. …

Each of the six research problems calls for a different method of enquiry, depending on the actual nature of the question being asked.

1. 'Does noise influence the problem solving ability of the people?' This is a cause-effect question, so the experimental method is most appropriate: noise level would be manipulated as the independent variable, and problem-solving performance measured as the dependent variable, comparing an experimental group exposed to noise against a control group in a quiet condition.
2. 'Should there be a dress code for college students?' This asks about existing opinion on a proposed policy, so survey research (through a questionnaire or interview) is the appropriate method to gauge students' views.
3. 'Studying the attitude of students, teachers, and parents towards homework.' This is also an attitude question spanning three distinct groups, so survey research is again the appropriate method.
4. 'Studying the behaviour of a student in a playgroup and in a classroom.' Since this calls for describing a student's natural behaviour across two real-life settings without manipulating anything, the observational method, specifically naturalistic observation, is appropriate.
5. 'Tracing the major life events of your favourite leader.' Since this concerns an in-depth, detailed account of one unique individual's life, the case study method is the appropriate choice. …