When you took your introductory psychology course, you likely learned a little bit about many different areas of psychology. However, as you began taking other psychology courses, you likely found that your professors would on information you already learned in your introductory psychology course. Essentially, you were adding new information onto existing information that you already knew.

elaborate; working memory                                    

Explanation:

Working memory: In psychology, the term "working memory" is also referred to as "short-term memory" or "recent memory" is described as one of the different types of memory that are being processed by an individual. Working memory is considered as a system for temporarily managing and storing a piece of information that is being required to carry out "complex cognitive tasks", for example, comprehension, learning, and reasoning.

In the question above, the given statement represents the working memory.