Which type of memory is limited to holding approximately seven bits of information?

Working memory is indeed characterized by its capacity to hold a limited amount of information, often cited as about seven chunks or bits, based on the research by George A. Miller, known as Miller's Law. This type of memory is essential for tasks that require immediate recollection and manipulation of information, such as problem-solving, reasoning, and learning. It allows individuals to temporarily store and work with information, facilitating cognitive processes that require active engagement.

Long-term memory, in contrast, has a much larger capacity and can retain information for extended periods, ranging from days to years. Sensory register refers to the initial stage of memory that briefly holds incoming sensory information, but it is fleeting and does not have the capacity to hold information like working memory. Iconic memory is a specific type of sensory memory that pertains to visual stimuli, lasting only a fraction of a second. Thus, when considering the specific capacity limit of around seven bits of information, working memory is the clear and appropriate answer.