Paradis (2007:128) predicts that "Motivation/affect may play an important role by influencing the activation threshold. Thus attrition may be accelerated by a negative emotional attitude toward L1, which will raise the L1 activation threshold. It may be retarded by a positive emotional attitude toward L1, which will lower its activation threshold." However, the link between motivation and attrition has been difficult to establish. Schmid & Dusseldorp (2010) fail to find any predictors for individual performance among a large number of measures of motivation, identity, and acculturation. Given Paradis' prediction, this finding is surprising, and may be linked to methodological difficulties of measurement: by definition, studies of language attrition are conducted a long time after migration has taken place (speakers investigated in such studies typically have a period of residence in the L2 environment of several decades). The operative factor for the degree of attrition, however, is probably the attitude towards both L1 and L2 at the beginning of this period, when massive and intensive L2 learning is taking place, affecting the overall system of multicompetence. However, attitudes are not stable and constant across a person's life, and what is measured at the moment that the degree of individual attrition is assessed may bear very little relation to the original feelings of the speaker.

L1
L1 झीज
प्रेरणा
प्रथम(पहिल्या) भाषेची झीज (FLA)