In order to study the potential effects of social interaction on problem solving, some research participants were instructed to solve problems working together. other participants were instructed to solve problems working alone. those who worked alone were exposed to the condition.

Those who studied alone were exposed to the CONTROL condition.

Explanation: In an experiment, there are usually 2 conditions.

1.) The Natural condition

2.) The controlled condition

In this case, the controlled condition, the researcher is testing one person at a time as against testing with a group of people. This is to ensure that the researcher can adjust the conditions of the other experiment by studying just one person at a time.

this is a pretty broad question and can be a pretty lengthy answer. since 1900, women have gained a lot more rights and have become active in the workforce. with women being in the workforce, men play a larger role in family life. many family tasks are shared between men and women, whereas, women used to be the sole family caretakers.

that should get you started at least.