Welcome to the World of Self-Reports!
Have you ever wondered what people are really thinking? In psychology, we can’t read minds (yet!), so we do the next best thing: we ask them. This is called a self-report. A self-report is a research method where the participant provides information about themselves, such as their thoughts, feelings, or behaviors.
In this chapter, we will explore the two main types of self-reports: questionnaires and interviews. Whether you are aiming for an \(A*\) or just trying to wrap your head around the basics, these notes will guide you through everything you need to know for your Cambridge 9990 exams.
1. Questionnaires
A questionnaire is a set of written questions given to a participant. They can be completed using paper and pencil or online. Questionnaires are great for reaching a lot of people quickly.
Types of Questions
The way we ask a question changes the kind of data we get:
- Closed Questions: These have a fixed set of answers. Think of "Yes/No" questions or "Rate your mood from 1 to 10."
Why use them? They produce quantitative data (numbers), which is easy to compare and put into charts. - Open Questions: These allow participants to answer in their own words. For example: "Describe how you feel when you are stressed."
Why use them? They produce qualitative data (words), giving us deep, rich detail about a person's experience.
Strengths and Weaknesses of Questionnaires
Strengths:
- Efficiency: You can send an online link to thousands of people at once!
- Honesty: People are often more honest on paper than face-to-face, especially about embarrassing topics.
- Reliability: Because the questions are the same for everyone, the study is easy to repeat (replicable).
Weaknesses:
- Social Desirability Bias: This is a big one! Participants might lie to make themselves look better (e.g., "I never lie" or "I eat five vegetables a day").
- Low Response Rates: Many people simply throw questionnaires in the bin.
Quick Review: Questionnaires are written. Closed questions = numbers. Open questions = words.
2. Interviews
An interview is like a conversation with a purpose. It can happen face-to-face or over the telephone.
Three Main Types of Interviews
Don't worry if these seem similar at first; the difference is all about how much "freedom" the interviewer has:
- Structured Interviews: The interviewer has a fixed list of questions and must ask them in the same order every time. They cannot add new questions.
Analogy: Like a fast-food worker taking your order—they have a specific script to follow. - Unstructured Interviews: The interviewer has a general topic but no set questions. The conversation flows based on what the participant says.
Analogy: Like a chat with a friend where you start talking about one thing and end up somewhere completely different! - Semi-structured Interviews: A mix of both. There is a list of core questions, but the interviewer can ask "follow-up" questions to get more detail.
Strengths and Weaknesses of Interviews
Strengths:
- Rich Detail: Especially in unstructured interviews, you can get a lot of complex information that a questionnaire might miss.
- Clarification: If a participant doesn't understand a question, the interviewer can explain it.
Weaknesses:
- Interviewer Effects: The participant might change their answer based on the interviewer’s age, gender, or tone of voice.
- Time-Consuming: It takes a long time to interview 50 people one-on-one!
Key Takeaway: Structured = fixed. Unstructured = flexible. Semi-structured = a bit of both.
3. Data and Analysis
In your exam, you need to know what kind of data self-reports produce:
- Quantitative Data: Numerical data (from closed questions). It's objective and easy to analyze using measures of central tendency (mean, median, mode) and measures of spread (range, standard deviation).
- Qualitative Data: Descriptive data (from open questions). It's subjective but gives much more validity because it explains the "why" behind a behavior.
Did you know? You won't have to do complex math in the exam! You just need to be able to name and find the mode, median, and mean if given a simple list of numbers.
4. Evaluating Self-Reports (The "Big Three")
When evaluating a study in Paper 1 or Paper 2, always think about these three things:
Reliability
Is the self-report consistent? If we used test-retest reliability (giving the same person the same questionnaire two weeks later), would we get the same result? Structured interviews and questionnaires are usually higher in reliability because they are standardized.
Validity
Are we measuring what we claim to measure?
- Social Desirability: This reduces validity because the answers aren't true.
- Demand Characteristics: If the participant guesses the aim of the study, they might change their answers to help (or hurt) the researcher.
Ethics
Psychologists must follow strict rules:
- Informed Consent: Participants should know what the study is about.
- Confidentiality: Answers should be kept private (no names used).
- Right to Withdraw: Participants can stop the interview at any time.
5. Planning a Self-Report (Paper 2 Skills)
If you are asked to plan a self-report in Paper 2, you must describe the procedure. Think about:
- Question Format: Will you use open or closed questions? Give a specific example of a question you would ask!
- Scoring: How will you turn answers into data? (e.g., "1 point for every 'Yes' answer").
- Technique: Will it be a face-to-face interview or an online questionnaire? Why?
Common Mistake to Avoid: When asked to describe an "interview," don't just say "I will ask them questions." You must specify if it is structured, semi-structured, or unstructured.
Quick Summary Checklist
- Questionnaire: Written, can be paper/pencil or online.
- Closed Questions: Fixed answers, quantitative data.
- Open Questions: Free text, qualitative data.
- Structured Interview: Fixed questions in a fixed order.
- Unstructured Interview: Flexible, conversation-style.
- Social Desirability: The tendency to give "good" answers rather than "true" ones.