It is difficult to determine any one variable or explanation which accurately answers why attitude does not always predict behaviour rather it is a combination of factors that lead to attitude-behaviour inconsistency. Attitude is complex and relates to behaviour in many ways rather than having a direct connection and is affected by both internal and external influences. Although not comprehensive and unanimous there are two theories which are likely to explain as to why attitude does not [always] affect behaviour. One theory, suggested by Fazio (1986), states that it is the lack of accessibility to one’s memory and the inability to respond promptly which causes this inconsistency.