what is research gap and give one example as well

A research gap refers to the missing piece of information or knowledge that has not been addressed or studied in existing literature or research. It is essentially the area where further research is needed in order to advance knowledge in a particular field.

Example: A research gap in the field of psychology may be the lack of studies on the impact of social media on mental health in elderly populations. Existing research may focus on the effects of social media on younger individuals, but there may be a need to investigate how social media usage affects the mental well-being of older adults. This gap in knowledge would highlight the need for further research in this specific area.