harlow and lorenz

Harlow conducted a study into attachment using 16 baby monkeys. He had two types of surrogate mother constructed; one was a harsh wire mother and one was a cloth-covered mother. The 16 monkeys were split into 4 groups of 4 and placed into different conditions. Condition 1 was a cage with a wire mother producing milk and a cloth-covered mother producing no milk, condition 2 was a cage with a wire mother producing no milk and a cloth-covered mother producing milk, condition 3 was a cage with a wire mother producing milk and condition 4 was a cage with a cloth-covered mother producing milk. Harlow recorded the amount of time spent with each mother and also recorded the feeding time. He also tested the monkeys’ mother preferences in times of stress by scaring them with loud noises. Lorenz used a group of goose eggs and divided them into two groups, one being left to hatch in their natural environment and the other hatching in an incubator. The first thing the control group saw was their mother but the first thing the experimental group saw was Lorenz. They were then placed in an upturned box and when he lifted it he recorded the behaviour of the goslings and where they went.