The theory of reasoned action (TRA) and theory of planned behavior (TPB) models predict behavioral intentions and behaviors. The TRA model from 1967 examines behavioral intentions rather than attitudes, and the TPB added perceived behavioral control in 1988. The models assess behavioral, normative, and control beliefs that influence attitude, subjective norms, and perceived behavioral control and ultimately behavioral intention. While effective in explaining cognitive factors influencing decisions, the models omit external demographic and personality factors and may not predict behaviors with long delays between intention and action.