text: _________________________________________________________________________________FM 2-22.3
  the EPW’s or detainee's mental state is one of confusion or extreme shock.
  However, the HUMINT collector must remember that just because a source
  is answering a direct question does not mean he is being truthful.
  INCENTIVE APPROACH
  8-21. (Interrogation and Other MSO) The incentive approach is trading
  something that the source wants for information. The thing that you give up
  may be a material reward, an emotional reward, or the removal of a real or
  perceived negative stimulus. The exchange of the incentive may be blatant or
  subtle. On one extreme, the exchange may be a formal cash payment for
  information during some contact operations while on the other extreme it
  may be as subtle as offering the source a cigarette. Even when the direct
  approach is successful, the HUMINT collector may use incentives to enhance
  rapport and to reward the source for cooperation and truthfulness. The
  HUMINT collector must be extremely careful in selecting the options offered
  to a detainee source. He cannot deny the detainee anything that he is
  entitled to by law.
  8-22. The HUMINT collector also should not offer anything that is not in his
  power to give. Although this might be expedient in the short term, in the long
  run it will eliminate source cooperation. When asked to provide something
  beyond his authority, the HUMINT collector can agree to help, check into, or
  otherwise support the request without committing himself to its successful
  accomplishment. HUMINT collectors must be cautious in the use of
  incentives for the following reasons:
  • There is an inherent suspicion of the truthfulness of “bought”
  information. Sources may manufacture information in order to receive
  or maintain an incentive. Sources may also “hold back” information in
  the hopes of trading it at a later date for greater incentives. They may
  also hold back information if the incentive is not immediately available
  or guaranteed.
  • The incentive must be believable and attainable. The incentive must be
  within the capability of the HUMINT collector’s assumed persona to
  achieve. For example, if the detainee was captured after killing a US
  soldier, an incentive of release would not be realistic or believable.
  Likewise, if the interrogator is presenting himself as being a “harmless
  clerk” at the detention center, it would be unrealistic to expect a
  detainee to believe that a clerk could arrange to have the detainee’s
  girlfriend brought to visit him. Such a visit might be possible, but the
  interrogator’s assumed persona would not seemingly provide him with
  the authority to make it happen.
  • The HUMINT collector must provide any promised incentive. A simple
  promise of an incentive may be sufficient to obtain immediate
  cooperation. If, however, the HUMINT collector does not follow
  through on providing the incentive, he will lose credibility and rapport
  with his source. This may end the cooperation of not only that source
  but also possibly any potential source who has contact with that
  source.
  • The HUMINT collector may not state or even imply that the basic
  human rights guaranteed by applicable national and international