Psychology: Definition, Science, and Goals

Chapter 1 - Module 1 - Segment 2

Defining Psychology

  • No single, universally agreed-upon definition exists.

  • Many definitions, each emphasizing different aspects.

Key Components of Psychology Definitions

  • Definition 1: Psychology as the science of the mind, mental states, and processes.

    • Focuses on how we think and the processes involved.

    • The 'science' aspect involves using observations to support ideas about causes of behavior.

  • Definition 2: Psychology as the science of human and animal behavior.

    • Animal studies provide insights into human behavior through comparisons.

    • Example: Monkeys' preference for alcohol parallels human tendencies, suggesting genetic factors.

      • Similar percentage of monkeys and humans show alcohol preference, implying genetic predisposition.

      • Social context influences alcohol's effects differently in monkeys versus humans.

  • Definition 3: Psychology as the scientific study of behavior, thought, and experience, and how they are affected by physical, mental, social, and environmental factors.

    • Integrates science with the study of behaviors, thoughts, and experiences.

Core concepts

Scientific Approach

  • Distinguishes psychology from other disciplines.

  • Employs specific methods to observe behavior and draw conclusions about its causes.

Behavior vs. Mental Processes

  • Behavior: Overt, observable actions.

    • Example: Observing children's aggressive behavior on a playground (pushing, throwing).

  • Mental/cognitive Processes: Hidden, covert internal processes.

    • Examples: Dreams, memories, problem-solving. Requires self-reporting or inference.

Psychology as a Set of Questions

  • Psychology addresses various questions about human behavior.

    • Why do people get jealous?

    • Why do people hurt others?

    • Why do people fall in love?

    • Why do I like some people but not others?

    • How does my brain influence my feelings?

      • Brain chemistry (serotonin, dopamine) is linked to emotions.

    • How can I improve my memory?

    • How can I get an A in this class?

      • Intelligence, motivation, managing stress, and expectations all play a role.

Psychology as a Set of Procedures

  • Psychology provides methods to answer questions about human behavior.

  • Employs scientific procedures to make observations and draw conclusions.

  • Example: Determining whether genetics or parental treatment better explains aggressive behavior.

Psychology as a Product of History

  • Psychology's questions have been asked throughout history.

  • Answers vary depending on the historical context.

Goals of Psychology

  • Psychologists aim to:

    • Describe behavior.

    • Explain/understand behavior (identify causes).

    • Predict behavior.

    • Control/change/modify behavior.

Depression Example

  • Description: Identifying characteristics of depression (sadness, lack of motivation, changes in sleep/eating habits).

  • Explanation: Exploring potential causes (low serotonin, stress, loss, rejection, bullying).

  • Prediction: Identifying individuals at risk (those who have experienced a recent loss).

  • Control/Change: Providing support (counseling, support groups) to prevent depression.

Understanding Causation

Equifinality

  • Different factors can lead to the same outcome.

    • Example: Depression can result from genetics, loss, or stress.

  • Conduct disorder can have different causes for different children: genetics, absent parents, limited resources.

Multifinality

  • Same causal factor can lead to different outcomes.

    • Example: Early childhood maltreatment can lead to eating disorders, mood disorders, conduct disorders, or normal adjustment.

    • Important not to assume a one-to-one relationship between cause and effect.

Diversity in Development

  • Illustrates the complexity of behavioral development.

  • Causal relationships are rarely simple; A does not always cause B.

  • Multiple factors often contribute to any given behavior.

Multidimensional Models

  • More accurate than one-dimensional models.

  • The biopsychosocial model considers biological, psychological, and sociocultural causes.

Biopsychosocial Model

  • Biological factors: Genetics, brain structures, nervous system functioning.

  • Psychological factors: Thoughts, coping mechanisms, self-esteem, communication skills.

  • Sociocultural factors: Peer relationships, family circumstances, school environment, cultural environment.

  • Example: Depression is caused by a combination of biological, psychological, and sociocultural factors.

  • Use the biopsychosocial model to analyze the causes of various behaviors and disorders.