Explain in detail about Bennett's hierarchy extension programme evaluation model.
Bennett’s hierarchy is an evaluation model used in agricultural extension to assess the effectiveness of programmes in a logical sequence. It begins with the level of inputs, referring to the resources such as funds, manpower, and materials invested in the programme. These inputs lead to activities like training sessions, demonstrations, workshops, or field visits. The next level is participation, which captures the involvement of farmers and stakeholders in these activities. Their reactions, reflecting satisfaction and perceived usefulness, form the subsequent stage. This is followed by changes in knowledge, attitude, skills, and aspirations, collectively called KASA, which signify deeper learning outcomes. If these are positive, they result in modifications of farming practices as farmers adopt recommended technologies. The final stage of the hierarchy is end results, representing measurable impacts on productivity, income, and overall quality of life. This model thus provides a structured pathway to link extension efforts with developmental outcomes.
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