In general for the Thai, there is nothing as serious as being rigid or unchangeable.
Because of this value, it is not surprising to find a “decision-shifting” behavior pattern quite common for the Thai, such as denying or postponing decisions to accept Christ, baptism, or appointment even though they said “yes” weeks prior.
They might even switch their principles…The Thai view the missionaries and what they do in various situations as more important in their conversion to Christianity than dogma or doctrines. If the doctrines can radiate through missionaries’ lives, it helps the Thai come to Christ. This also helps missionaries in developing the meekness approach to the Thai.
– From a study done by Dr. Suntaree Komin, a Thai psychologist and a Fulbright scholar, who wrote a publication entitled Psychology of the Thai People: Values and Behavioral Patterns.