Under which of the following conditions is overjustification effect most likely to occur? a. Tom was very keen to learn French. He joined French classes and spent a lot of time studying French. b....

Under which of the following conditions is overjustification effect most likely to occur?

a. Tom was very keen to learn French. He joined French classes and spent a lot of time studying French.

b. Neel was hardly interested in learning French but his parents forced him to join French classes. He started taking an interest in learning French when a credit system was introduced.

c. Jesica joined French classes as she was very keen to learn French. Later, when a credit system was introduced, she started taking more interest in her French classes. When the credit system was withdrawn, her interest in learning French declined significantly.

 d. John joined French classes as most of his friends were attending the same. However, later, he gave up learning French as he could not cope up with the syllabus.