Positive:
Openness: People open to experience are those who have greater sensitivity, curiosity and greater absorption of information, which is a positive trait for effective communication, since they are people open to social interaction and more tolerant of other personality types.
Extroversion: Extroverts can also communicate effectively because they are open people, prone to expressing their feelings through words, sociability and interaction.
Negative:
Introversion: Introverted people may have difficulty communicating because they have a more closed and reflective personality, prefer to think than talk, may be shy and have difficulty expressing themselves in words.
Neuroticism: This personality is characterized by states of anxiety, fear, worry and loneliness, which can make communication difficult due to the difficulty of social interaction.