Happiness is a positive emotion associated with feelings of joy, contentment, and overall well-being. It is often expressed through smiling, laughter, and a sense of optimism.

Microexpressions are involuntary facial expressions that occur for a brief moment and reveal a person's true emotions, even if they are trying to conceal them.

Sadness is a negative emotion associated with feelings of sadness, grief, and loss. It is often expressed through crying, a downturned mouth, and a lack of energy.

Emotional decoding is the process of inferring emotions from facial expressions and body language. It involves recognizing and interpreting nonverbal cues to understand a person's emotional state.

Anger is a negative emotion associated with feelings of anger, resentment, and hostility. It is often expressed through a furrowed brow, clenched fists, and aggressive behavior.

Emotional expression refers to the physical and behavioral changes that accompany an emotion, such as facial expressions, body language, and vocal tone.

Fear is a negative emotion associated with feelings of fear, anxiety, and apprehension. It is often expressed through a wide-eyed stare, rapid breathing, and avoidance behavior.

Emotional regulation refers to the ability to manage and control one's emotions, including the ability to express emotions in a healthy and appropriate manner.

Disgust is a negative emotion associated with feelings of contempt, disgust, and revulsion. It is often expressed through a wrinkled nose, a curled upper lip, and avoidance behavior.

Empathy is the ability to understand and share the feelings of others, putting oneself in their shoes and experiencing their emotions as if they were one's own.

Surprise is a neutral emotion associated with feelings of astonishment, surprise, and wonder. It is often expressed through raised eyebrows, an open mouth, and a gasp.

Emotional awareness refers to the ability to recognize and understand one's own emotions, including their causes, intensity, and impact on behavior.

Anticipation is a neutral emotion associated with feelings of anticipation, excitement, and eagerness. It is often expressed through a smile, a sparkle in the eyes, and fidgeting.

Emotional intelligence refers to the ability to use emotions to facilitate thinking and problem-solving, including the ability to understand and manage one's own emotions and the emotions of others.

Guilt is a negative emotion associated with feelings of guilt, shame, and remorse. It is often expressed through a downturned head, a furrowed brow, and avoidance behavior.