2. Communication: An essential instrument in human relations Communication is a method by which the sharing of thoughts, feelings, ideas, and messages occurs, and it can influence the behaviour of those who respond according to their own beliefs, values, cultures, and life stories. Communication can be defined as "the capacity to exchange or discuss ideas, to dialogue, to converse with the aim of an understanding between the parties".[16] Communication, then, is an instrument of great importance in the realization and development of work, leisure, education, relationships, conversation, and negotiation.[17] Communication, an instrument that is indispensable to interpersonal interaction is not only restricted to verbal language and the utilization of vocabulary. Rather, it also comprises other Traumatic Brain Injury 468