Research has indicated that general goal intentions (e.g., "I strongly intend to reach X") only explain 20-30% of the variance of behavioral change. After all, past behavior still tend to be a better predictor for people's future behavior compared to goal intentions (Gollwitzer,1999).
Various variables determine the success of goal attainment such as the framing of goal setting. For example, goals that are set in a challenging, specific way lead to greater success than goals that are set in a challenging but vague way (Locke&Latham, 1990). On the basis of these findings, the strategy of implementation intentions has been developed.
Read more about this topic: Implementation Intention
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