Which of the following statements is true of William James's contribution to psychology?

William James was a pioneering figure in psychology, known for several significant contributions. Here are a few key points about his contributions:

1. Functionalism: James is often associated with the development of functionalism, a school of thought that focused on the purposes of consciousness and behavior.

2. Pragmatism: He applied the philosophical approach of pragmatism to psychology, emphasizing the practical applications of psychological concepts.

3. Stream of Consciousness: James introduced the idea of the “stream of consciousness” to describe the continuous flow of thoughts in the human mind.

4. The Principles of Psychology: His book, published in 1890, is one of the most influential texts in psychology, offering insights into mental processes and the nature of belief.

5. James-Lange Theory of Emotion: He proposed the James-Lange theory, which suggests that emotions result from physiological reactions to events.

If you have specific statements to evaluate, please provide them, and I can determine which one is true regarding James's contributions to psychology.