IB Psychology Y1 – Core Concepts, Bias, Causality & Historical Paradigms

Core Concepts in IB Psychology

Conceptual Learning

• A concept = abstract idea organising knowledge and applicable to many instances.

• Functions as a cognitive “toolbox” enabling transfer across contexts and critical analysis of research.

Bias

Definition

• Cognitive limitation systematically deviating from truth.

• Distinguished from random error by being systematic and rooted in experience, culture, or preference.

• Leads individuals to process evidence in belief-consistent ways.

Cross-Cultural News Bias Example

• Reuters (Western lens) depicts India as reacting to US tariffs; The Wire (Indian lens) shows India as proactive.

• Reveals influence of cultural framing on perceived agency, priorities (economic vs sovereignty), and attribution of causality.

2008 Global Financial Crisis Illustration

• Overconfidence bias + availability heuristic → bankers assumed housing prices would rise indefinitely.

• Underestimated sub-prime risk → cascading failures of banks/insurers.

Domains Where Bias Surfaces

1. Research process: researcher, participant, sampling, confirmation, publication, gender, cultural biases; order effects; experimental mortality; social desirability; demand characteristics.

2. Interpretation of findings: biological/environmental reductionism exaggerating certain variables.

3. Everyday cognition: stereotypes, discrimination.

Related Technical Terms

• Determinism, credibility, reflexivity, inter-rater reliability, positivism, reductionism vs holism, cognitive biases, sampling techniques.

Causality

Definition & Example

• Relationship whereby change in variable $X$ produces change in variable $Y$.

• Example: amount of caffeine (independent variable) affects memory performance (dependent variable).

Science Functions

• $\text{Describe} \rightarrow \text{Explain} \rightarrow \text{Predict} \rightarrow \text{Control}$

Nuanced Interpretation Points

• Bidirectional ambiguity, short- vs long-term causation, interaction/complexity of multiple factors.

Related Terms

• Reductionism, correlation vs causation, internal/external validity, mundane realism, extraneous variables, placebo, double-blind, wait-listing, significance (p<0.05), agency, motivation.

Perspective

• A viewpoint or approach shaped by theories, models, or cultural/indigenous standpoints.

• Full understanding requires integrating multiple perspectives into a holistic whole.

Related Terms

• Biological, cognitive, sociocultural approaches; deductive/inductive logic; emic vs etic; alternative explanations.

Measurement

• Quantifying behaviour via research methods.

• Data quality determines knowledge depth.

• Raises TOK issues about certainty and scientific status of human-science methodologies.

Related Terms

• Method choice, constructs, operationalisation, data types (self-report, anecdotal, empirical), statistical significance ($\alpha$ errors), brain imaging, content analysis, prospective vs retrospective, longitudinal vs cross-sectional.

Change

• Modification in thoughts, emotions, behaviours; can be natural developmental progression or intervention-driven.

• Examples: child cognitive growth, onset of depression, therapy impact, technology-aided cognition.

Related Terms

• Barriers, prevalence, longitudinal/repeated measures, intervention/prevention/promotion, treatment effectiveness, development, maturation, determinism, agency, motivation.

Responsibility (Ethics)

• Moral duty to conduct, report, and apply research ethically with stakeholder wellbeing in mind.

Ethical Standards & Issues

• Informed consent, deception, cost–benefit analysis, anonymity, debriefing, right to withdraw, protection from harm, animal use, child participants, public-space studies, socially sensitive research, stigma, advocacy.

Historical Paradigms and Foundational Debates

Psychodynamic Theory (Sigmund Freud, 1890s–1930s)

Core Assumptions

• Behaviour driven by unconscious motives and conflicts.

• Psychic structure: Id (pleasure), Ego (reality), Superego (morality).

• Personality shaped through psychosexual stages: Oral → Anal → Phallic (Oedipus complex) → Latency → Genital.

• Ego defence mechanisms (repression, denial, projection, displacement, rationalisation, sublimation, regression) protect from anxiety.

Methods to Access Unconscious

• Free association, dream analysis (dreams as “royal road” to unconscious).

• Observation of parapraxes (Freudian slips).

Empirical & Modern Support

• Solms (1995): Brain-imaging shows damage near limbic–cortex junction disrupts dreaming & wishing.

• Freudian slip research: Anxiety-linked language errors; e.g., “breast worker.”

• Motley et al. (1985): Increased sexual spoonerisms when aroused in presence of attractive woman.

Critiques / Implications

• Relies on qualitative case studies and introspection; challenges of falsifiability.

• Influenced later discussions about explanatory richness vs predictive precision.

Behaviourist Theory (B.F. Skinner, Watson; 1930s onward)

Core Assumptions

• Humans born $\text{tabula rasa}$; behaviour = product of environmental stimuli and past learning.

• Positivist stance: study only observable behaviour under controlled conditions.

Operant Conditioning

• Behaviour shaped by reinforcement (rewards) and punishment.

• Skinner Box: Rat gradually shaped to press lever for food (reinforcer).

• Extension to education via “teaching machine” (programmed instruction, immediate feedback, self-paced learning).

Watson’s Quote

• With full control of environment, any infant can be trained into any profession—emphasises environmental determinism.

Methodological Traits

• Heavy use of animal models; quantitative data and statistical analysis; search for universal learning laws.

Comparing Paradigms (Freud vs Skinner)

Explanatory vs Predictive

• Freud: rich explanatory narrative (birth trauma) but limited testable predictions.

• Skinner: precise predictions about behaviour under specified reinforcement schedules.

Holistic vs Reductionist

• Freud: Holistic case studies (e.g., Anna O) integrate biography, culture, intrapsychic dynamics.

• Skinner: Reductionist experimental approach isolating singular variables to infer cause-effect.

Qualitative vs Quantitative

• Freud: Narratives, dream transcripts, therapeutic dialogue—non-numeric.

• Skinner: Lever-press counts, reinforcement schedules—numeric, statistically analysable.

Human vs Animal Research

• Freud: Only human patients; idiographic insights generalised to other humans.

• Skinner: Rats, pigeons, and humans; argued cross-species generalisability of learning principles.

Broader Implications for IB Psychology

• Introduces enduring debates:
  • Nature vs nurture
  • Conscious vs unconscious processes
  • Scientific rigour vs depth of understanding
  • Ethical responsibility in both human and animal research.

Integrative Critical-Thinking Links Across Concepts

1. Bias influences every stage of measurement, interpretation, and responsible application.

2. Accurate measurement is prerequisite for credible causal inference; poor operationalisation introduces systematic bias.

3. Different perspectives (biological, cognitive, sociocultural) provide complementary causal models, highlighting complexity and potential interaction effects ($X<em>1 \times X</em>2$).

4. Change interventions (therapies, policies) must consider ethical responsibilities and measurement of effectiveness (pre-post designs, longitudinal follow-up).

5. Critical-thinking questions students might pose:
   • “Which biases could threaten the internal validity of this study?”
   • “Is the identified relation truly causal or correlational?”
   • “How might a different cultural perspective reinterpret these findings?”
   • “Are the constructs operationalised in a reliable, valid way?”
   • “What are the ethical implications of applying this research in real-world settings?”

Numerical & Statistical References

• Statistical significance threshold commonly p < 0.05.

• Type I error: false positive (rejecting $H_0$ when true).

• Type II error: false negative (failing to reject $H_0$ when false).

• Effect size quantifies magnitude of difference/association ($d, r, \eta^2$).

• Longitudinal design tracks change across $t<em>1, t</em>2, \dots t_n$; cross-sectional compares groups at single $t$.

Ethical, Philosophical & Practical Implications

• Researcher bias and cultural framing require reflexivity and diverse collaboration.

• Behaviour modification (operant conditioning) raises issues of autonomy and consent.

• Psychoanalytic therapy stresses confidentiality and handling of transference.

• Animal studies demand justification of costs vs scientific benefits.

• Publication bias can distort perceived efficacy of interventions—necessitates pre-registration and open data.

Real-World Relevance & Connections to Prior Knowledge

• Financial crisis example links cognitive Bias to macro-economic policy.

• India-EU trade-deal coverage shows sociocultural Perspective shaping information ecosystems.

• Operant conditioning principles underlie modern educational software and gamified apps.

• Psychodynamic ideas inform contemporary psychotherapy (e.g., CBT integrates cognitive restructuring with recognition of unconscious triggers).

• Measurement debates mirror Theory of Knowledge discussions on limitations of scientific method in human sciences.

Study Tips Based on Concepts

1. Be aware of personal biases when reading research; practice active scepticism.

2. Map variables and hypothesised causal paths before designing or evaluating a study.

3. Triangulate perspectives—ask how biological, cognitive, and sociocultural explanations might complement each other.

4. Scrutinise measurement tools for reliability ($\alpha$) and validity (construct, criterion).

5. When discussing change or treatment efficacy, always consider ethical responsibility and cultural sensitivity.