Theoretical Perspectives in Developmental Psychology: Key Concepts and Models

Developmental Psychology: Theoretical Perspectives

Introduction

Developmental psychology explores how humans grow and change throughout the lifespan. Theoretical perspectives provide frameworks for understanding the processes and stages of development, including biological, cognitive, and social influences.

Freud's Psychosexual Stages of Development

Overview of Freud's Theory

Sigmund Freud proposed that personality develops through a series of childhood stages in which the pleasure-seeking energies of the id become focused on certain erogenous areas. This psychosexual energy, or libido, is the driving force behind behavior.

Approximate Age	Focus of Libido	Developmental Task
0–12 months	Mouth	Feeding; moving from breast and other forms of milk to solid foods.
12–36 months	Anus	Toilet training; learning to control bodily functions.
36 months–6 years	Genitals	Gender awareness; resolving Oedipus/Electra complex by identifying with same-sex parent.
6–12 years	No focus	Period of calm; resolution of previous stages.
12 years onwards	Genitals	Sexual maturity; formation of intimate relationships.

Key Points

• Libido shifts focus across different body regions as the child ages.

• Successful completion of each stage leads to a healthy personality; fixation can result in psychological issues.

Comparison of Freud and Erikson's Stage Theories

Freud vs. Erikson: Age-Related Stages

Erik Erikson expanded Freud's theory by emphasizing social and cultural factors and introducing psychosocial stages that span the entire lifespan.

Age of Child	Erikson	Personal Characteristic
Infancy to 12 months	Trust vs mistrust	Hope
12 months to 3 years	Autonomy vs shame	Will
3 to 6 years	Initiative vs guilt	Purpose
6 years to puberty	Industry vs inferiority	Competence
Adolescence	Identity vs role confusion	Fidelity
Young adulthood	Intimacy vs isolation	Love
Middle adulthood	Generativity vs stagnation	Care
Older adulthood	Ego integrity vs despair	Wisdom

Key Points

• Erikson's stages focus on psychosocial crises and their resolution.

• Each stage is associated with a core personal characteristic (e.g., hope, will, purpose).

Classical Conditioning: Learning Theory

The Process of Classical Conditioning

Classical conditioning is a type of learning discovered by Ivan Pavlov, where a neutral stimulus becomes associated with a meaningful stimulus, eliciting a conditioned response.

• Unconditioned stimulus (US): Naturally elicits a response (e.g., food).

• Unconditioned response (UR): Natural reaction to the US (e.g., salivation).

• Conditioned stimulus (CS): Previously neutral, now elicits response after association (e.g., technician).

• Conditioned response (CR): Learned response to CS (e.g., salivation at sight of technician).

Equation:

$ext{CS} + ext{US} ightarrow ext{CR}$

Piaget's Three Mountains Study

Egocentrism in Cognitive Development

Jean Piaget's three mountains study investigated children's ability to see perspectives other than their own, a key aspect of cognitive development during the preoperational stage.

• Children were asked to describe what a doll would see from different positions around a model of three mountains.

• Young children often chose their own perspective, demonstrating egocentrism.

• Older children could correctly identify the doll's perspective, showing cognitive growth.

Concrete Operations Stage: Key Abilities

Main Abilities Learned

During the concrete operations stage (ages 7–11), children develop logical thinking skills and can perform operations on concrete objects and events.

Logical Task	Child is able to convert this...	To this...
Seriation	ACDEFB	ABCDEF
Classification	ABBEABABABA	(AAAA) (BBBBB)
Reversibility	5 + 5 = 10	Therefore, 10 – 5 = 5

• Seriation: Ability to order items along a dimension (e.g., length).

• Classification: Ability to group objects by shared properties.

• Reversibility: Understanding that actions can be reversed (e.g., addition and subtraction).

Bronfenbrenner's Bioecological Theory

Social Influences on Development

Urie Bronfenbrenner's bioecological theory emphasizes the multiple layers of environmental influence on development, from immediate surroundings to broader societal contexts.

• Microsystem: Immediate environment (family, school, peers).

• Mesosystem: Interconnections between microsystems.

• Exosystem: Indirect environments (parent's workplace, community services).

• Macrosystem: Cultural and societal influences.

• Chronosystem: Changes over time (life transitions, historical events).

Example: A child's development is shaped by interactions within their family, school, and community, as well as cultural values and societal policies.

Additional info: Bronfenbrenner's model is often depicted as nested circles, with the individual at the center and each system surrounding them.