Intro to Psychology (8.21.25)

Carl Rogers and Abraham Maslow (Humanistic Psychology)

  • Humanistic psychology: pioneers in this approach to psychology

  • Carl Rogers

    • Founder figure in humanistic psychology

    • Emphasized that we are unique individuals with the capacity to control our own motivation

    • Highlights free will, self-direction, and personal choice in thoughts, behaviors, and life directions

  • Abraham Maslow

    • Built on Rogers’ ideas

    • Contributed a theory of motivation (Maslow’s theory of motivation; he is tied to the humanistic emphasis on growth and potential)

  • Key takeaway: humanistic psychology focuses on human potential, growth, choice, and self-actualization rather than just pathology or mechanical behavior

Contemporary psychology and specialization

  • Psychology today is a broad, diverse scientific discipline

  • Increasing specialization leads to clearer career paths and areas of emphasis

  • Example from instructor: sports psychology as a specialization

  • Emphasis (orientation) vs. specialties (areas of practice) can guide which theories and practices are most relevant

  • Short note: the field continues to diversify, with multiple perspectives informing practice and research

The major perspectives in psychology (overview)

  • Biological perspective

    • Centers on neuroscience and biology as determinants of behavior

    • Key components: nervous system, endocrine system, immune system, genetics

    • Focus: how these systems predict and shape behavior in humans and animals

  • Psychodynamic perspective

    • Heavily influenced by Sigmund Freud and psychoanalysis

    • Emphasizes unconscious influences, early life experiences, and interpersonal relationships

    • Note: contemporary psychologists may adopt only parts of Freud’s theory (not all of it)

  • Behavioral perspective

    • Based on Watson and Skinner

    • Emphasizes learning from environmental experiences and personal history

    • Behavior is shaped by reinforcement and consequences rather than inner drives alone

  • Humanistic perspective

    • Rooted in Maslow and Rogers (revisited)

    • Focuses on psychological growth, interpersonal relationships, self-concept, the importance of choice, and directing one’s life toward fulfilling potential

    • Often emphasized in health-related psychology settings

  • Positive psychology perspective

    • Focuses on positive aspects of human functioning: happiness, optimism, resilience, character strengths, wisdom, creativity

    • Counterbalances pathology-focused approaches

    • Mentioned as a class offering online (not on campus in the instructor’s experience)

  • Cognitive perspective

    • Focuses on information processing: perception, thinking, memory, language, problem solving

    • Draws on the analogy to computer processing models (historical link to 1950s computer development)

    • Provides a framework for understanding how people think and decide

  • Cross-cultural perspective

    • Emphasizes culture in shaping behavior and the applicability of research across cultures

    • Highlights that findings from one culture may not generalize to others

    • Example distinction: individualistic vs collectivistic cultures

  • Evolutionary perspective

    • Grounded in Charles Darwin’s natural selection

    • Psychological processes that helped our ancestors survive were passed down

    • Example: fear of snakes as an evolutionary adaptation

Individualistic vs. collectivistic cultures (cross-cultural focus)

  • Individualistic cultures

    • Emphasize independence and personal achievement

    • Tend to exhibit social loafing in group settings (less individual effort when working in a group)

    • Motivation often tied to personal goals and self-reliance

  • Collectivistic cultures

    • Emphasize group needs and interdependence

    • Tend to exhibit social striving (greater group cohesion and coordinated effort)

  • Real-world implication: culture shapes group dynamics, motivation, and how people respond in social contexts

Specialty areas and professional distinctions

  • Psychologists

    • Often hold a PhD (research-focused) or PsyD (practice/teaching-focused, more clinical)

    • Roles include research, teaching, clinical practice, or a combination

  • Psychiatrists

    • Medical doctors (MD or DO)

    • Can hospitalize patients, order biomedical therapies, and prescribe medications

The scientific method in psychology (steps as discussed in class)

  • Step 0 (curiosity): Develop a genuine interest and form a question about a phenomenon

  • Step 1 (hypothesis): Formulate a testable hypothesis; acknowledge related assumptions

  • Step 2 (materials): Determine the materials and metrics needed for the study (design considerations, not the same as a literature review)

  • Step 3 (experiment): Design the study and conduct the experiment

  • Step 4 (data collection/analysis): Collect data and analyze; draw conclusions

  • Step 5 (report): Report findings to others to share knowledge

  • Step 6 (replication): Replicate the study to ensure results are reliable and not a fluke

  • Note: The instructor also mentions a variant where curiosity leads to a precise hypothesis; the exact labeling can vary by course, but the sequence above captures the described flow

Descriptive research methods (non-causal descriptions)

  • Important caveat: these methods describe what is observed but do not establish causation

  • Naturalistic observation

    • Observe behavior in its natural environment (e.g., home, playground, workplace)

    • Pros: high ecological validity, natural behavior; avoids artificial lab effects

    • Cons: findings may be highly context-specific; limited generalizability

    • Example: observing parent-child interactions in the family home

  • Case study

    • In-depth study of a single person or a very small group

    • Pros: rich, detailed data; can reveal rare or unusual conditions

    • Cons: not generalizable to the broader population

    • Used when unusual cases offer unique insights

  • Surveys

    • Structured questionnaires or interviews to assess opinions, behaviors, and characteristics of a group

    • Delivery methods: online, QR codes, in-person, phone, etc.

    • Key design considerations: wording and order of questions influence responses

    • Population vs sample: population is the entire group of interest; sample is a subset that should be representative

    • Sampling goals: representative sample through random selection to reduce bias

  • Correlational methods

    • Measure strength and direction of association between two variables

    • Core concept: correlation coefficient $r$ (Pearson)

    • Interpretation of $r$:

    • Strong positive correlation: $|r|$ close to 1 and positive

    • Strong negative correlation: $|r|$ close to 1 and negative

    • Weak or no correlation: $r$ near 0

    • Important caveat: correlation does not imply causation; only experiments can establish causal links

    • Example: shark attacks and ice cream sales are correlated due to a third variable (time of year, warm weather) rather than one causing the other

  • Representative sampling and random selection

    • To generalize findings to a larger population, samples should be representative

    • Random selection gives each individual an equal chance of being included

    • A biased sample can distort results and limit generalizability

Correlation vs. causation (illustrative examples)

  • Correlation does not imply causation; two variables can move together without one causing the other

  • Classic example used in class: ice cream sales and shark attacks

    • Increases in both often occur in warmer months, so they are correlated but not causally related

    • Confounding factor: time of year / seasonality

  • Formal note: The correlation coefficient $r$ quantifies the strength and direction of a linear relationship, but it does not prove causality

Experiments: key concepts and components

  • Independent variable (IV)

    • The variable that the researcher manipulates

    • Purpose: to observe its effect on the dependent variable

  • Dependent variable (DV)

    • The outcome measured to assess the effect of the IV

  • Confounding (extraneous) variables

    • Other factors that could influence the DV and distort the perceived effect of the IV

    • Researchers aim to control or account for these variables

  • Experimental design elements

    • Random assignment: participants are placed into groups (e.g., experimental vs control) by chance to ensure comparability

    • Control group: baseline condition that does not receive the experimental manipulation

    • Experimental group: receives the treatment/level of the IV being tested

    • Placebo effect: participants’ expectations can influence outcomes even if they receive a non-active treatment

    • Placebo/control conditions: to isolate the true effect of the IV from expectancy effects

  • Limitations and considerations

    • Laboratory settings may limit generalizability to real-world contexts

    • Environmental control can reduce realism and external validity

    • Not all variables can be perfectly controlled; ethical concerns also constrain designs

Ethical considerations in psychological research

  • Founded and guided by the American Psychological Association (APA)

  • Founding figure mentioned: Stanley Hall (founded the APA)

  • Five key ethical principles (as summarized in class)

    • Informed consent and voluntary participation: participants should know what they are getting into and can decline or withdraw at any time

    • Deception and its limits: deception is sometimes used but must be justified and followed by a debriefing

    • Confidentiality: participants’ data and personal information must be protected

    • Debriefing: at the end of participation, researchers explain the study, its purpose, and findings, and thank participants

    • Right to withdraw and other protections: participants can leave the study if they choose; researchers must avoid coercive practices

  • Deception requires careful justification and handling; debriefing is essential to ensure participants understand the true nature of the research

  • Confidentiality and data handling are critical for protecting participant privacy

  • The ethics section emphasizes minimizing potential harm and respecting human rights in research

Miscellaneous points and reflections from the lecture

  • The instructor’s teaching style includes frequent checks for understanding and invites questions, indicating the material can be reviewed and clarified iteratively

  • The lecture emphasizes connecting theory to practice, including how perspectives influence real-world applications in health, education, and workplace settings

  • The content integrates historical foundations (Freud, Darwin, Hall) with modern practice, highlighting how foundational ideas evolve into contemporary approaches

  • Throughout the lecture, there are prompts to consider how culturally and contextually specific research can be and should be, reinforcing a critical, nuanced view of psychological science