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1. Concepts
1.1 Bias
1.2 Causality
1.3 Change
1.4 Measurement
1.5 Perspective
1.6 Responsibility
2. Content
2.1 Biological Approach
2.2 Cognitive Approach
2.3 Sociocultural Approach
2.4 Research Methodology
3. Contexts
3.1 Health and Well-being
3.2 Human Development
3.3 Human Relationships
3.4 Learning and Cognition
4. Extensions (HL only)
4.1 Culture
4.2 Motivation
4.3 Technology
4.4 Data Analysis and Interpretation
Action Potential
A brief electrical signal that travels down the axon of a neuron when it is activated.