Friends ask Chris to join them for dinner. Chris, pleased by the invitation, immediately indicates that he will accept the invitation. However, Chris later calculates how much time he will need to prepare for an exam the next day. He realizes he does not have time to prepare for the exam and join friends for dinner. Chris informs his friends he cannot join them for dinner. The initial excitement and decision to join friends for dinner is MOST likely attributed to:
a. type 2 thinking.
b. availability heuristic.
c. representative heuristic.
d. type 1 thinking.

Type 1 thinking, a concept developed by psychologist Daniel Kahneman states that decision making is not based on conscious, rational thought. This type of thinking is instantaneous, instinct based and engineered by past events.

All emotional responses are based in Type 1 thinking, but not all Type 1 thinking is emotional.

So, Chris at being invited by friends to a date is happy at the invitation and instantly agrees without any further thought to his other engagements. When he takes a careful check and sees he has limited time to read for his exam, he has to cancel.

The response from beginning is purely instant and driven by emotion.