2 - Scientific Foundations of Psychology
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AP Psychology Unit 2
Title: Scientific Foundations of Psychology
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About this Unit
Transition from religious/philosophical explanations to modern psychological perspectives.
Overview of major viewpoints in psychology.
Discussion on psychological research methods.
Importance: 10-14% of the AP Exam, including Free Response Questions on Research Design, affecting final grade significantly.
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Table of Contents
2.1 Introduction to Psychology
2.2 Research Methods
2.3 The Experimental Method
2.4 Statistical Analysis
2.5 Selecting a Method
2.6 Ethical Guidelines
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2.1 Introduction to Psychology Objectives
Recognize the impact of philosophical and physiological perspectives on psychological thought.
Identify contributions of major historical figures in psychology.
Compare different theoretical approaches to behavior.
Understand strengths and limitations of psychological theories.
Distinguish various domains of psychology.
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What is Psychology?
Defined as the scientific study of behavior and mental processes.
Science is a systematic method for organizing knowledge through testable predictions.
Behavior: All overt actions (e.g., talking, reactions).
Mental Processes: Internal activities of the mind (e.g., thinking, feeling, remembering).
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Pre-Psychology
Psychology is a relatively new social science emerging from ancient philosophical, religious, and physiological explanations.
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History of Psychology: Structuralism
Originated in Leipzig, Germany (1879) with Wilhelm Wundt.
Focused on the structure of the mind through objective introspection (self-reporting after stimuli exposure).
Edward Titchener introduced structuralism to the US, emphasizing consciousness’ structure.
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History of Psychology: Functionalism
Introduced by William James, focused on the function of the mind in helping individuals adapt and thrive.
Authored the first psychology textbook.
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History of Psychology: Gestalt Psychology
Max Wertheimer rejected structuralism; asserted perceptions cannot be simplified to parts.
Gestalt emphasizes that the whole experience is greater than the sum of its components.
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History of Psychology: Psychoanalysis
Founded by Sigmund Freud, explored unconscious conflicts impacting psychological disorders.
Psychoanalysis extends beyond psychology, influencing various fields including art and literature.
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History of Psychology: Behaviorism
Ivan Pavlov demonstrated involuntary reactions (classical conditioning).
John Watson proposed behaviorism, emphasizing only observable behavior, dismissing introspective techniques.
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Contemporary Perspectives: Psychodynamic and Behavioral
Psychodynamic theory evolved from Freud’s ideas, focusing more on self-development.
Behavioral perspective was transformed by B.F. Skinner, emphasizing operant conditioning and stimulus-response relations.
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Contemporary Perspectives: Humanistic
Humanistic psychology emerged in response to behaviorism and psychoanalysis.
Advocated by figures like Abraham Maslow and Carl Rogers, focusing on free will and personal growth.
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Contemporary Perspectives: Biopsychological and Evolutionary
Biopsychology studies biological foundations of behavior.
Evolutionary psychology looks at mental traits as evolutionary adaptations through natural selection.
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Contemporary Perspectives: Sociocultural and Cognitive
Sociocultural perspective explores the intersection of social behavior and cultural context.
Cognitive psychology examines internal processes like memory and problem-solving.
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Psychological Professionals
Psychologist: Trained professional in psychology.
Psychiatrist: Medical doctor specializing in mental disorder treatment.
Psychiatric Social Worker: Social worker trained in therapy methods.
Research in psychology can be basic (knowledge-building) or applied (practical solutions).
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Areas of Specialization
Clinical, Counseling, Developmental, Experimental, Personality, and Physiological psychologists each specialize in distinct research and treatment areas.
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Areas of Specialization
Neuropsychologists, Comparative psychologists, Educational psychologists, School psychologists, and Sports psychologists focus on unique applications of psychology.
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Areas of Specialization
Forensic, Community, and Environmental psychologists address legal, societal, and environmental interactions with psychology.
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Assessment and Supplemental Resources
Evaluations through quizzes like Kahoot.
Recommended resources: Crash Course Psychology, History of Psychology.
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2.2 Research Methods Objectives
Differentiate various research types based on strengths and weaknesses.
Discuss the importance of operational definitions and measurement.
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Critical Thinking
Critical thinking involves evaluating claims based on evidence.
Key questions to aid critical thinking include understanding claims, alternative interpretations, and additional evidence.
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Critical Thinking and Scientific Research
Scientific inquiries start with complex questions that unfold into numerous related queries.
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Critical Thinking and Scientific Research
Hypothesis formulation and operational definitions are crucial for clarity in research.
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Critical Thinking and Scientific Research
Validity and reliability of evidence are assessed to evaluate research findings.
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The Role of Theories
Theories in science provide comprehensive explanations, but must be revised as new evidence emerges.
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Research Methods: Observation
Naturalistic observation involves unobtrusive watching in the natural environment.
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Research Methods: Case Studies
In-depth examination of a particular individual or group in specific situations.
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Research Methods: Surveys
Surveys collect data on attitudes and beliefs through questionnaires or interviews.
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Research Methods: Correlational Studies
Analyze relationships between variables; correlation indicates the strength and direction of relationships.
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Experiments
Experiments involve manipulating variables to observe effects while controlling others.
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Assessment and Supplemental Resources
Suggested readings and resources on research methods in psychology.
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2.3 The Experimental Method Objectives
Identify types of variables in experimental designs.
Understanding research design implications on conclusions drawn.
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Basics of Experiments
Independent variable (manipulated) vs. dependent variable (measured); control for confounding variables.
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Selecting Participants in Psychological Research
Importance of sampling; random vs. representative samples to avoid bias.
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Groups and Bias in Psychological Research
Understanding experimental and control groups; implementation of double-blind designs to minimize bias.
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Assessment and Supplemental Resources
Suggested articles and resources related to research designs.
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2.4 Statistical Analysis Objectives
Understanding descriptive versus inferential statistics in psychological research.
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Statistical Analysis of Research Results
Key measures of central tendency: mean, median, mode, and range.
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Example Set
Calculation of range, mean, median, and mode using a sample data set from AP Psychology cohort.
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Descriptive Statistics
Visual data representation through graphs (e.g. histograms).
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Example Histogram
Understanding the graphical representation of data through histograms.
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Descriptive Statistics
Standard deviation as a measure of data variance; understanding its calculations.
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Example Data Distribution
Visual representation of data points across a set range.
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Inferential Statistics
Procedures to infer meanings from research data; understanding statistical significance.
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Assessment and Supplemental Resources
Practical exercises for statistical calculations and additional resources for understanding statistics.
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2.5 Selecting a Method Objectives
Assess research design quality and validity of behavioral explanations.
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Thinking Through Validity
Criteria for assessing validity in research studies and common methodological flaws.
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Assessment and Supplemental Resources
Recommendations for articles and resources for re-writing free response questions if needed.
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2.6 Ethical Guidelines Objectives
Understanding ethics in research for participant protection and sound practices.
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Research Ethics with Human Subjects
Rights of participants: informed consent, protection from harm, confidentiality, and debriefing responsibilities.
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Assessment and Supplemental Resources
Flipgrid assessments and APA Ethical Principles and Code of Conduct.