“…One broad category of change refers to cognitive decline, such as concentration difficulties and forgetting daily events, names of people and places, people’s faces, birthdays and retrieving stored items [ 68 , 70 , 71 , 73 , 86 , 88 , 92 , 95 , 100 , 102 , 103 , 114 , 116 , 117 , 119 , 122 , 123 ]. Two studies report that participants were aware that their ability to learn had decreased; and therefore, newer tasks were harder to remember [ 95 , 116 ]. A substantial number of studies report on challenges in communication: participants did not find the right words, repeated themselves in conversations, forgot what they wanted to say, or found it difficult to follow conservations as their focus was reduced [ 71 , 77 , 88 , 95 , 100 , 101 , 111 , 116 , 118 , 121 , 122 ].…”