IELTS Reading: prove why the answers are correct

In this lesson I suggested a different way to practise: get the correct answers from the back of the book, and try to prove why they are correct.

Here's an example reading passage:

Behaviourism is a systematic approach to understanding the behaviour of humans and other animals. During the first half of the twentieth century, John B. Watson devised methodological behaviourism, which rejected introspective methods and sought to understand behaviour by only measuring observable behaviours and events.

It was not until the 1930s that B. F. Skinner suggested that private events—including thoughts and feelings—should be subjected to the same controlling variables as observable behaviour. This approach became the basis for his philosophy called "radical behaviourism”. While Watson and Ivan Pavlov investigated the stimulus-response procedures of classical conditioning, Skinner assessed the controlling nature of consequences and also their potential effect on the antecedents of behaviour; the technique became known as operant conditioning.

Now look at the 'true, false, not given' statements and correct answers below. Can you explain why each answer is correct?

1. Watson measured both visible behaviour and hidden emotions. (FALSE)
2. Skinner’s approach differed from that of Watson and Pavlov in that he went beyond the strictly observable. (TRUE)