a. Socioeconomic class
Some people speak in one sentence and always blend the word in Thai and English in the same sentence. The listener will guess that speakers are graduated from bachelor degree from abroad and have high socioeconomic class. In our culture there are many social classes, and many classes will have different style in speaking. The riches have more opportunity to study abroad that influence to their speaking while the common people who don’t have the chance to study won’t speak like that.