Smartphone notifications significantly disrupt cognitive focus

Research indicates that smartphone notifications significantly disrupt cognitive focus and productivity. A foundational study by Gloria Mark from the University of California, Irvine, revealed that after a single interruption, workers require an average of 23 minutes and 15 seconds to return to their original level of concentration.

This phenomenon is attributed to ‘attention residue,’ a concept described by psychologist Sophie Leroy of the University of Washington. This occurs when cognitive resources remain tied to the previous task during an interruption, preventing a full return to the primary activity.

Furthermore, studies show that notifications cause distraction even if they are not opened. Recent research published in Scientific Reports suggests that the mere presence of a smartphone in a person's vicinity can reduce baseline cognitive capacity, regardless of whether notifications are received.