what are strengths and limitations of animal studies
+ research support, Schaffer and Emerson conducted another study which supported Harlows findings.
+ harlow: understanding human mother-infant attachment: contact is important and quality of relationships can affect later life.
X: hard to generalise findings to humans, as we are more complex
X: Evs, heads of the wire monkeys were different, may have preferred cloth one due to a more attractive head.
Ducks imprinted on yellow gloves X: rubber glove doesnt help buck survive BUT + supports theory of imprinting