Understanding 動機 (どうき)
動機 refers to the underlying reason or incentive behind a person's actions or decisions. It is often used in formal or investigative contexts, such as police reports or psychological analysis, to explain why someone did something.
Usage and Nuance
When using 動機, speakers imply a cause or reason that drives behavior, often with a focus on intention or purpose. It is more formal than simply saying 'reason' and is commonly found in written or serious spoken Japanese.
Common Collocations
- 動機がある (have a motive): used when someone has a reason to do something, often in legal or investigative contexts.
- 動機を説明する (explain the motive): used when clarifying why someone acted.
- 動機を失う (lose motivation): used in contexts related to personal drive or enthusiasm, especially for work or study.
Register and Politeness
動機 is a noun used in both formal and neutral contexts. It is appropriate in business, academic, and legal discussions. It is not casual and rarely used in everyday informal conversation.
Common Learner Mistake
Learners sometimes confuse 動機 with 意図 (いと), which means 'intention' or 'aim.' While related, 動機 focuses on the underlying reason or incentive, whereas 意図 is more about the planned purpose or goal. Use 動機 when emphasizing why someone is motivated, and 意図 when emphasizing what someone intends to do.