What aspect characterizes automatic thinking, or System 1?

Automatic thinking, or System 1, is characterized by its speed and reliance on associative memory. This type of thinking operates quickly and often effortlessly, enabling individuals to make immediate judgments and decisions based on past experiences and familiar cues. It is often intuitive and does not require deep reflection or conscious thought, which allows for quick responses in situations that may demand immediate action.

This type of processing is particularly useful in daily life, where rapid responses are essential, as it helps people navigate routine tasks without getting bogged down by lengthy analysis. System 1 thinking contrasts with deliberate, slow, and effortful cognitive processes typically described as System 2, which involve critical thinking and complex problem-solving.

Thus, the defining characteristic of System 1 is its speed and efficiency in processing information using associations drawn from memory, making it the correct choice.