Strength of Lorenz
P: Research support for imprinting
E: Regolin and Vallortigara – chicks followed first moving shape (e.g., triangle)
E: Supports innate mechanism + critical period
L: Increases reliability/biological basis of Lorenz’s findings
H: Generalisability issue – animal → human (more complex social/cognitive systems)
Lorenz Limitation
P: Limitation – Difficult to generalise animal research to humans.
E: Bird attachment is simpler, whereas mammalian attachment is two-way (both infant and mother form emotional bonds).
E: This means Lorenz’s findings on birds may not fully explain human attachment.
L: Therefore, the application of Lorenz’s theory to humans is limited.
H: However, Seebach proposed “baby duck syndrome”, where humans prefer the first system they learn, suggesting imprinting-like behaviour.
Strength of Harlow
P: Practical applications of Harlow’s findings
E: Informed social workers/clinical psychologists about importance of early bonding; lack of bonding = developmental risk (Howe)
E: Influenced zoos/breeding programmes to ensure access to attachment figures
L: Shows research has real-world value for improving human and animal welfare
H: Ethical issues – severe distress to monkeys, but findings still highly influential
Harlow Weakeness
P: Limitation – difficulty generalising from animals to humans
E: Monkeys are similar to humans but not identical (both mammals)
E: Humans have more complex cognitive and social processes
L: Therefore Harlow’s findings may not fully apply to human attachment
H: However, monkeys are more similar to humans than birds, so findings are more relevant than Lorenz’s
Limitation of Explanation of attachment (animals)
P - Lack of support from animal studies
E - Lorenz’s geese imprinted regardless of food; Harlow’s monkeys preferred soft surrogate over wire one with food
E - Contradicts idea that attachment forms through food associations
L - Theory is reductionist
Limitation Learning Theory (Baby Studies)
P - Lack of support from studies on babies
E - Schaffer & Emerson (1964) — babies attached to mother regardless of who fed them; sensitive responsiveness was key
E - Attachment may be due to responsiveness, not food
L - Other factors beyond food are important
Learning Theory Strength (conditioning )
P - Elements of conditioning could be involved in some aspects of attachment
E - Baby associates warmth/comfort with a certain adult → influences choice of attachment figure
E - Comfort may play a central role alongside food, so conditioning may still be useful
L - Classical conditioning may have face validity as an explanation
Learning Theory Strength (SLT)
P - SLT explanation acknowledges babies’ active involvement in attachment
E - Baby reciprocates the model’s behaviour through observation and imitation e.g. hugging
E - Learning theory coincides with other theories e.g. reciprocity and interactional synchrony
L - Higher validity as it has support from other attachment theorists