The actual tests would employ the well-honed methods of operant conditioning, developed initially on pigeons, in which the test subject has first to work out what is going on by trial and error.
实际的测试会采用精确的操作性条件反射方法，测试对象首先要清楚实验的过程和错误。
n. 自发反应；操作性制约；发生作用之人或物
autonomic response