harlow did an experiment based on baby monkeys with two wire mothers one had a milk dispenser that was plain wire the other was a cloth covered mother with a milk dispenser
harlow found that the monkeys cuddles with the cloth covered mothers and sought out comfort from them rather than the wire mother
harlow concluded that contact comfort is more important to monkeys than food when it comes to attachment behaviours
operant conditioning is when you learn from the consequences of your behaviour
operant conditioning explains why babies cry for comfort as it leads to a response in the caregiver