Foundations and Methods in Psychology: Perspectives, Research, and Scientific Practice

Theoretical Perspectives in Psychology

Introduction

Psychology is the scientific study of behaviour, thought, and experience. Over time, several major theoretical perspectives have shaped the field, each offering unique insights into how behaviour and mental processes are understood. These perspectives are influenced by physical, mental, social, and environmental factors.

• Structuralism

• Functionalism

• Behaviorism

• Cognitivism

• Psychodynamic

Structuralism

Structuralism was one of the earliest schools of thought in psychology, focusing on breaking down mental processes into their most basic components.

• Founded by: Wilhelm Wundt

• Established the first psychology laboratory.

• Emphasized understanding the structure and characteristics of the mind through introspection (examining one's own thoughts, feelings, and experiences).

• Systematic observation to study consciousness.

• Reflection on experience.

Functionalism

Functionalism shifted the focus from the structure of the mind to its functions and purposes, emphasizing how mental processes help individuals adapt to their environment.

• Founded by: William James (first American psychologist)

• Focused on the purpose of cognitive processes.

• Examined what the mind does and how behaviour functions.

• Influenced by the theory of natural selection (mental processes and behaviours selected for their adaptive value).

Psychodynamic Perspective

The psychodynamic perspective emphasizes the influence of unconscious processes and early childhood experiences on behaviour.

• Founded by: Sigmund Freud

• Studied hysteria and neurosis.

• Problems arise from the unconscious mind.

• Unconscious mind accessed through dream analysis.

• Focus on the role of early childhood experiences.

Behaviorism

Behaviorism focuses on observable behaviour, rejecting introspection and the study of mental processes as unscientific.

• John B. Watson is considered the father of behaviorism.

• Believed that objective analysis of the mind was impossible; only observable behaviour should be studied.

• Emphasized learning through reinforcement and punishment.

• Used today in behavioural therapy and cognitive behavioural therapy (CBT).

Cognitivism

Cognitivism reintroduced the study of mental processes, focusing on how people think, learn, and remember.

• Key figures: Jean Piaget and Ulric Neisser

• Studied mental processes underlying thinking.

• Thinking affects behaviour, not just reward or punishment.

• Example: After failing a test, a student may change their study strategy based on reflection.

B. F. Skinner and Operant Conditioning

• Focused on how behaviour is affected by its consequences.

• Studied reinforcement and punishment (operant conditioning).

• Example: Praise from a teacher (positive reinforcement) encourages continued studying.

Women in Psychology

Historically, women were excluded from psychology programs, received less pay, and had limited representation, which hindered their contributions to the field.

Factors That Make Up Knowledge

• Authority

• Reason

• Observation

Concept: The bystander effect demonstrates that safety in numbers is not always true; common sense can be misleading.

Scientific Method in Psychology

Introduction

The scientific method is a systematic way of learning about the world through observation, theory development, and testing predictions.

• Identify a question of interest

• Formulate an explanation (hypothesis)

• Carry out research to support or refute the hypothesis

Scientific Theory and Hypothesis

• Theory: An explanation for a large number of findings in the natural world.

• Hypothesis: A testable prediction about processes that can be observed and measured.

• Hypotheses must be falsifiable (able to be proven wrong).

Example Hypothesis: The more people present at the scene of an accident, the longer the response time will be (bystander effect).

Bias Awareness

• Confirmation bias: Tendency to seek out evidence that supports our hypothesis and ignore contradictory evidence.

• Belief perseverance: Tendency to stick to initial beliefs even when evidence is contradictory.

Psychological Pseudoscience

• Any claim or practice that sounds scientific but is not supported by real evidence or proper research.

• Examples: Imposters of science, lack of critical thinking, opportunity cost (wasted time and resources).

Terror Management Theory

• We experience anxiety because we are aware that death is inevitable but unpredictable.

• To manage this anxiety, we seek worldviews that provide meaning, purpose, and continuity.

• Tested by manipulating mortality salience (how much death is on our minds).

Modern Psychology

Experimental Psychology

• Research-focused branch of psychology.

Clinical Psychology

• Treatment, assessment, diagnosis.

• Science-practitioner model.

Branches of Psychology

• Neuropsychology

• Child/developmental psychology

• Industrial-organizational (I-O) psychology

• Sports psychology

• Social/personality psychology

Research Methods in Psychology

Objectivity and Subjectivity

Objectivity means being neutral, unbiased, and based on facts rather than personal opinions or feelings. Subjectivity is when interpretation is shaped by prior beliefs, experiences, and emotions.

Characteristics of Quality Scientific Research

• Based on measurements that are objective and reliable

• Can be generalized

• Uses techniques that reduce bias

• Made public

• Can be replicated

Common Sense vs. Scientific Approach

• Common sense assumptions

• Observations

• Solving real-life problems

• Understanding how something works

Research Questions and Variables

• Research questions must be testable and observable.

• Variable: The object, concept, or event being measured or manipulated.

• Operational Definitions: Statements that describe the procedures or operations and specific measures used for observations.

Validity and Reliability

• Validity: How well a study measures what it is meant to measure.

• Reliability: Refers to consistent and reliable answers.

Types of Validity

• Internal Validity: How well a study is conducted.

• External Validity: How findings relate to the real world.

• Inter-rater Reliability: Consistency of results between two raters (observers).

• Ecological Validity: The results of a lab study also work in real-life settings.

• Alternate Forms Reliability: Consistency when different forms of the same test produce the same results.

Example Table: Types of Validity and Reliability

Type	Description	Example
Internal Validity	Quality of study design	Controlled lab experiment
External Validity	Generalizability to real world	Findings apply outside lab
Inter-rater Reliability	Consistency between observers	Two raters score a test similarly
Ecological Validity	Applicability to real-life settings	Lab stress study matches real-world stress
Alternate Forms Reliability	Consistency across test versions	Different test forms yield similar results

Key Equations and Concepts

• Falsifiability: A hypothesis must be constructed so it can be proven wrong.

• Operationalization: Defining variables in terms of specific, measurable procedures.

Additional info: Some explanations and examples have been expanded for clarity and completeness, such as the table on validity and reliability and the definition of key terms.