What is a spontaneous declaration?

What is a spontaneous declaration?

Do contemporaneous statements have to be spontaneous? When are statements of a person’s mental state admissible? Review this case on bias and give your opinion on what you feel the Supreme Court ruling should be on this type of evidence. http://www.npr.org/2016/10/11/497196091/top-court-hears-case-on-racial-bias-in-jury-deliberations