Behavioural modelling — training by demonstration

If a picture is worth a thousand words, a demonstration by a model is probably worth several thousand. For example, take the man who visits a Chinese restaurant and is unable to use chop sticks. He tries to learn on a trial‐and‐error basis but, after dropping food all over the table, asks for a fork and spoon. Yet if the same man was accompanied by a Chinese friend, who effectively demonstrated the use of chop sticks, he may use them with some degree of success.