Measuring Personality

Lily Scott
7 min read
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Study Guide Overview
This study guide covers methods of personality assessment, including direct observation, projective tests (Rorschach, TAT), and personality inventories (MMPI). It connects these methods to major psychological perspectives (behaviorism, psychodynamic, trait, social-cognitive). The guide also reviews research methods, focusing on their strengths and weaknesses. Finally, it provides exam tips, highlighting reliability, validity, the Hawthorne effect, and practice questions covering these concepts.
#AP Psychology: Personality Assessment - The Night Before 🌙
Hey! Let's get you feeling confident about personality assessment. We'll make sure you're ready to ace those questions. Let's dive in!
#Methods of Personality Assessment
Psychologists use different methods to measure personality, often depending on their theoretical leanings. Here's a breakdown:
# Direct Observation: The Behaviorist's Approach 👀
- What it is: Essentially, it's watching people in their natural environment (or a controlled one). Think of it as a structured form of people-watching.
- Who uses it: Favored by behaviorists.
- Behavioral Assessments: Record the frequency of specific behaviors.
- Pros: Great for making inferences about behavior.
- Cons:
- Subjectivity: Can be influenced by observer bias.
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#Hawthorne Effect: People change their behavior when they know they're being watched. 💡
Hawthorne Effect: Think of it as the 'I'm on camera' effect. People act differently when they know they are being observed.
# Projective Tests: Unlocking the Unconscious 🔓
- What they are: Tests that use ambiguous stimuli to reveal inner thoughts. The idea is that when you're not sure what you're looking at, your own personality shapes your interpretation.
- Who uses them: Primarily used by psychodynamic psychologists.
- Types:
- Rorschach Inkblot Test:
- Participants describe what they see in a series of inkblots.
- Rorschach Inkblot Test:
Most commonly used projective test, but it's not very reliable.
TAT: Think of it as telling a story about a picture. The story you tell reveals your inner thoughts.
# Personality Inventories: Self-Reporting 📝
- What they are: Questionnaires where people provide information about themselves.
- Who uses them: Often used by trait psychologists.
- Key Example:
- Minnesota Multiphasic Personality Inventory (MMPI):
- Most widely used self-report instrument.
- Includes lie detector questions to prevent deception.
- Used in various areas of life.
- Minnesota Multiphasic Personality Inventory (MMPI):
MMPI: Think of it as a detailed personality survey with built-in lie detectors.
#Overview of Research Methods Table
Research Method | Description | Perspectives that use this method | Benefits | Weaknesses |
---|---|---|---|---|
Case study | In-depth study of one individual. | Psychoanalytic, humanistic | Less expensive than other methods. | May not generalize to the larger population. |
Survey | Systematic questioning of a random sample of the population. | Trait, social-cognitive, positive psychology | Results tend to be reliable and can be generalized to the larger population. | May be expensive; correlational findings. |
Projective tests | Ambiguous stimuli designed to trigger projection of inner dynamics. | Psychodynamic | Designed to get beneath the conscious surface of a person's self-understanding; may be a good ice-breaker. | Results have weak validity and reliability. |
Personality inventories | Objectively scored groups of questions designed to identify personality dispositions | Trait | Generally reliable and empirically validated. | Explore limited number of traits. |
Observation | Studying how individuals react in different situations. | Social-cognitive | Allows researchers to study the effects of environmental factors on the way an individual's personality is expressed. | Results may not apply to the larger population. |
Experimentation | Manipulate variables, with random assignment to conditions. | Social-cognitive | Discerns cause and effect. | Some variables cannot feasibly or ethically be manipulated. |
#Connecting the Dots: Key Theories and Methods
- Behaviorism: Focuses on observable behaviors (direct observation).
- Psychodynamic: Explores the unconscious (projective tests).
- Trait Theory: Identifies and measures personality traits (personality inventories).
- Social-Cognitive: Examines how environment and thoughts influence personality (observation, experimentation).
#
Final Exam Focus
- High-Priority Topics:
- Reliability and validity of different assessment methods.
- The Hawthorne effect and its impact on research.
- How different theoretical perspectives use different assessment techniques.
- Common Question Types:
- MCQs on identifying the best assessment method for a given scenario.
- FRQs requiring you to compare and contrast assessment techniques or explain their strengths and weaknesses.
- Time Management:
- Quickly scan the table of research methods to refresh your memory.
- Focus on the key differences between projective tests and personality inventories.
- Common Pitfalls:
- Confusing reliability with validity.
- Forgetting the limitations of each assessment method.
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Last-Minute Tips
- Stay Calm: You've got this! Take deep breaths.
- Read Carefully: Pay close attention to the wording of each question.
- Trust Your Instincts: Go with your first answer unless you have a very good reason to change it.
#
Practice Question
Practice Questions
#Multiple Choice Questions
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A researcher is interested in studying the effects of social interaction on personality development. Which of the following research methods would be MOST appropriate for this study? (A) Case study (B) Survey (C) Observation (D) Projective test (E) Experimentation
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Which of the following is a major criticism of projective personality tests? (A) They are too time-consuming to administer. (B) They are not useful in clinical settings. (C) They lack reliability and validity. (D) They are too expensive to use in large-scale studies. (E) They are too subjective for use in research.
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A psychologist is using a self-report questionnaire to assess personality traits. Which of the following is a potential limitation of this method? (A) It is difficult to score objectively. (B) It is not useful for identifying specific traits. (C) It is susceptible to the Hawthorne effect. (D) It relies on participants' self-awareness and honesty. (E) It is not applicable to diverse populations.
#Free Response Question
Scenario: A psychologist is interested in studying the personality of individuals who have experienced trauma. They are considering using both projective tests and personality inventories.
(a) Describe one projective test and one personality inventory that the psychologist could use.
(b) Compare and contrast the strengths and weaknesses of using projective tests and personality inventories in this context.
(c) Explain how the Hawthorne effect could influence the results of this research, and suggest one way to minimize its impact.
Scoring Rubric:
(a) Description (2 points)
- 1 point for accurately describing a projective test (e.g., Rorschach, TAT).
- 1 point for accurately describing a personality inventory (e.g., MMPI).
(b) Comparison and Contrast (4 points)
- 1 point for a strength of projective tests (e.g., taps into unconscious).
- 1 point for a weakness of projective tests (e.g., low reliability/validity).
- 1 point for a strength of personality inventories (e.g., reliable, empirically validated).
- 1 point for a weakness of personality inventories (e.g., limited traits explored).
(c) Hawthorne Effect (2 points)
- 1 point for explaining how the Hawthorne effect could influence the results (e.g., participants may alter their responses).
- 1 point for suggesting a way to minimize the Hawthorne effect (e.g., use of control groups, deception, naturalistic observation).
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