Developmental Psychology: Cognitive & Language Development Master Notes

An expert-level, exam-ready study guide detailing Piaget, Vygotsky, Information-Processing architecture, and the major frameworks of Language Acquisition.

Core Topics Covered:

1. T1 - Nature & Approaches to Cognitive Development: Conceptual scope (perceptual, attentional, and metacognitive shifts) broken down across 6 major theoretical traditions: Biological, Constructivist, Information-Processing, Socio-Cultural, Psychodynamic, and Evolutionary. Features a deep dive into neural maturation, critical periods, and Spelke's Core Knowledge Systems.
2. T2 - Theories of Cognitive Development:
   1. Jean Piaget: The 4 universal stages (Sensorimotor sub-stages to Formal Operations), core adaptation mechanics (Assimilation, Accommodation, Equilibration), and a thorough breakdown of structural limitations (Egocentrism, Centration, Conservation failure). Includes decades of empirical counter-criticisms (Baillargeon, McGarrigle & Donaldson) and Neo-Piagetian updates.
   2. Lev Vygotsky: The Zone of Proximal Development (ZPD) mapped accurately across 3 distinct learning zones, scaffolding dynamics (Contingency, Fading, Transfer), and the true cognitive utility of Private Speech. Features a side-by-side Piaget vs. Vygotsky Comparative Matrix.
   3. Information-Processing Perspective: Human memory architecture (Sensory Register, LTM, and Baddeley's multi-component Working Memory model). Focuses on Executive Function (EF) as the developmental core: Inhibitory Control, Cognitive Flexibility, and WM Updating.
3. T3 - Language Development Dynamics:
   1. Theoretical Face-Off: Extensive analysis of the Nativist (Chomsky's Universal Grammar, LAD, and Poverty of the Stimulus), Behaviourist (Skinner's verbal operants), Interactionist (Bruner's LASS), Socio-Cultural, and Statistical Learning (Saffran's transitional probabilities) perspectives.
   2. The 8 Stages of Language: Linear trajectory from Cooing and Babbling to Holophrases, Telegraphic Speech, and Metalinguistic Awareness.
   3. Key Linguistic Phenomena: Fast mapping, overextensions, the 30 Million Word Gap, and why Over-regularisation errors ("goed", "mouses") fundamentally prove rule abstraction over imitation.

✨ Key Features & Formatting Highlights

1. Topper-Grade Answer Engineering: Built with structured definition grids, clean tables, and organized subheadings specifically designed to mimic high-scoring university long-form scripts.
2. Empirical Rigor: Packed with landmark experimental paradigms (The Three Mountains Task, Violation-of-Expectation, the Marshmallow Test, and the Dimensional Change Card Sort) to build bulletproof academic authority.
3. Maximum Revision Speed: Includes a Comprehensive Quick Revision Summary at the end to allow for lightning-fast active recall the night before an exam