Principles and Techniques of Veterinary and AH Extension

CHOICE OF AUDIO VISUAL AIDS

• Audio-visual aids are just tools or aids or vehicle for transfer of ideas, technology or message.
• The success depends upon the selection of right type of audio-visual aids at the right way.
• There is no inherent magic in the visuals.
• They have to be used in support of a talk for highlighting the most salient feature in the talk to make the audience to understand and remember.
• They are only aids to verbal words of the communicator.
• Audio-visual aids are not necessary for each and every type of communication. For example, there are ideas simple enough that can be easily communicated through verbal words.
• Audio-visuals are therefore need to be used judiciously for subject matter that is beyond easy comprehension of the audience or out of their experience or abstract enough or complicated enough for their easy understanding.
• It is only then that audience will have a sustained interest for learning through audio-visual aids.
• While planning for the use of audio-visual aids the extension agent need to be selective in using the aids taking into consideration different factors like
  • the audience (age, sex, level of literacy, previous experience etc.)
  • availability and cost of equipments
  • familiarity of extension agent with the equipments
  • facilities required for use of the aids, subject matter etc.
  • above all it also depends upon the objective or purpose of the communication.