According to Webster’s Encyclopedic Dictionary

According to Webster’s Encyclopedic Dictionary, age pertains to the number of years an individual have. Furthermore, according to Anthony Lake, executive director of UNICEF, the meaning of age will continue to be a fluid concept and will be constructed through complex and iterative processes for decades. Age relates to the year the respondent has been in presence. The age might be one of the vital factors since there are numerous scientists that show age contrasts among the students with respect to various perspectives which incorporate the level of information, capacities and aptitudes of the students.
Galiza (2005) expressed that in instruction, age was vital or pertinent to the people included. A portion of the people turn out to be slower and less versatile as they become more established yet they endeavor to make up for this lack by enhancing their reliability, security, and nature of work.
Rehage (2008) stated that many studies revealed that motor performance tends to decline in old age, learning capabilities remain intact, and older adults are able to achieve considerable performance gains. These only mean that younger learners tend to have better motor performance than those who are older.
Al-Mutairi (2011) stated that younger students had a tendency to perform better than mature students in a college setting. While Coldwell, Craig, Colorado and Eberle (2010) and Paterson and Mustard (2008) revealed that student age was not related to academic performance, which was measured by the course grade in online courses.
Several studies concluded that the psychomotor performance decline with the age and they were also researching that gives possible causes to this. Several studies suggest that peripheral processes remain intact with increasing age and the response time deficits in older adults are due to central processing deficits (Salthouse, 1985; Weis, 1965); Clarkson, 1978).
In addition, Galilea (1997) stated that age creates more experiences and these experiences are the best teachers. In like manner, age creates more experience and these experiences serves as greater teachers just like in the quotation “experience is the best teacher”.
In the study of Stelmach and Goggin (), they concluded that there are few primary mechanisms responsible for the psychomotor decline with advanced age. These only means that as a person gets older, their psychomotor performance become slower. They also examine different factors such which include physiological, social, health and behavioral.
Through those researches, researchers consider age as one of the important variable since it can measure their experiences. The longer they exist, there is more experiences. As long as they have more experiences, they tend to be more skilled. As a person gets older, psychomotor performances gets decline.
Ages can have effect within this study since age can measure individual differences among the respondents.