15  Effective Communication: Verbal and Non-Verbal

Effective communication is communication that produces the intended understanding in the receiver, with minimum distortion. It is judged not by what was sent but by what was received and understood. Two channels carry the message — verbal (words) and non-verbal (everything else). Research summarised by Albert Mehrabian (1971) suggests that, in face-to-face communication of feelings and attitudes, only about 7 % of meaning comes from words; 38 % from tone of voice; 55 % from body language. The 7-38-55 rule applies specifically to emotional content and is often misapplied to all communication.

15.1 Verbal Communication

Verbal communication uses words — spoken or written.

TipVerbal Communication: Two Forms
Form Strengths Limitations
Oral (lecture, conversation, telephone, presentation) Immediate feedback; conveys emotion through tone; flexible No permanent record; limited reach; subject to misremembering
Written (letter, email, report, memo, social-media post) Permanent record; precise; wide reach No immediate feedback; slower; loses tone and gesture

15.1.1 The 7 Cs of Effective Communication

A widely-taught checklist for effective verbal communication.

TipSeven Cs of Effective Communication
C Principle What it asks
Clarity Clear ideas, simple words Is the message understandable in one reading?
Conciseness Brief, to the point Have all unnecessary words been removed?
Concreteness Specific facts and figures Are vague terms replaced with specifics?
Correctness Free of errors Are grammar, facts, names accurate?
Coherence Logical flow Do ideas connect in a sensible sequence?
Completeness All necessary information Has every relevant point been covered?
Courtesy Respect for the receiver Is the tone polite and considerate?

Some texts include an eighth C — Consideration (taking the receiver’s perspective).

15.2 Non-Verbal Communication

Non-verbal communication carries information without words. It is often unconscious, and when verbal and non-verbal signals conflict, receivers tend to trust the non-verbal.

TipSix Channels of Non-Verbal Communication
Channel Greek / Technical name What it includes
Body language Kinesics Gesture, posture, head movement
Facial expression and eye behaviour (within Kinesics) — Oculesics for eye contact Smile, frown, raised brow, eye gaze, pupil dilation
Voice quality Paralanguage / Vocalics Pitch, tone, volume, pace, pauses, “um”, silence
Personal space Proxemics Distance maintained between speakers
Touch Haptics Handshake, pat on the shoulder
Time Chronemics Punctuality, time given to others, pace
Appearance and artifacts Objectics / Artifactics Dress, jewellery, badges, office layout 

flowchart TB
  N[Non-Verbal<br/>Communication] --> K[Kinesics<br/>Body language]
  N --> O[Oculesics<br/>Eye contact]
  N --> P[Paralanguage<br/>Voice quality]
  N --> X[Proxemics<br/>Distance]
  N --> H[Haptics<br/>Touch]
  N --> C[Chronemics<br/>Time]
  N --> A[Artifactics<br/>Appearance]
    classDef default fill:#003366,color:#ffffff,stroke:#ffcc00,stroke-width:3px,rx:10px,ry:10px;

15.2.1 Edward T. Hall’s Proxemics — Four Distance Zones

Anthropologist Edward T. Hall (1966) classified interpersonal distance into four zones (figures from US norms; Indian norms are typically smaller).

TipHall’s Four Distance Zones
Zone Distance When used
Intimate 0 – 18 inches (0 – 0.45 m) Close family, lovers, comforting
Personal 18 inches – 4 ft (0.45 – 1.2 m) Friends, family conversation
Social 4 – 12 ft (1.2 – 3.6 m) Acquaintances, colleagues
Public Beyond 12 ft (3.6 m+) Speaker to audience

15.2.2 Paul Ekman’s Six Universal Facial Expressions

Paul Ekman (1971) found six basic emotional expressions to be universal across cultures: happiness, sadness, anger, fear, surprise, disgust. Contempt was added as a candidate seventh in later work.

15.3 Listening — the Other Half of Communication

Listening is active, not passive. Surveys show that managers spend roughly 45 % of communication time listening — more than reading, writing, or speaking.

TipFive Levels of Listening
Level What the listener does
Ignoring No attention given
Pretending Appears to listen but is elsewhere
Selective Hears only parts of interest
Attentive Pays attention to words
Empathic / Active Listens with intent to understand the speaker fully
TipActive Listening — Working Habits
  • Pay attention — face the speaker, maintain eye contact.
  • Show that you are listening — nod, smile, brief affirmations.
  • Provide feedback — paraphrase, ask clarifying questions.
  • Defer judgment — let the speaker finish before reacting.
  • Respond appropriately — open, honest, on-topic.

15.4 Public Speaking

TipFive Working Principles for Public Speaking
Principle What it asks
Know your audience Adjust language, examples, depth
Open strongly, close strongly First and last 30 seconds matter most
Tell stories Concrete narrative beats abstract list
Vary the voice Pitch, pace, volume to avoid monotone
Use visuals sparingly Slides support; they do not replace

15.5 Effective Communication — Working Checklist

TipSix Habits of Effective Communicators
Habit What it looks like
Plan the message Decide purpose, audience, channel before drafting
Empathise Take the receiver’s perspective
Use simple words Replace jargon with plain terms
Match verbal and non-verbal Avoid mixed signals
Seek feedback Confirm that the message landed as intended
Adjust to context Email, oral, formal, informal — different rules

15.6 Practice Questions

Q 01 Mehrabian's Rule Easy

According to Albert Mehrabian's research on the communication of feelings and attitudes, what percentage of meaning is carried by words?

  • A7 %
  • B38 %
  • C55 %
  • D100 %
View solution
Correct Option: A
Mehrabian's 7-38-55 rule: words 7 %, tone of voice 38 %, body language 55 % — for emotional content specifically.
Q 02 7 Cs Easy

Which of the following is not one of the standard "7 Cs" of effective communication?

  • AClarity
  • BCoherence
  • CConformity
  • DConciseness
View solution
Correct Option: C
The 7 Cs are Clarity, Conciseness, Concreteness, Correctness, Coherence, Completeness, Courtesy. Conformity is not one of them.
Q 03 Proxemics Medium

The study of how people use personal space in communication is called:

  • AKinesics
  • BProxemics
  • CChronemics
  • DHaptics
View solution
Correct Option: B
Proxemics = personal space (Edward T. Hall, 1966). Kinesics = body language; Chronemics = time; Haptics = touch.
Q 04 Non-Verbal Channels Medium

Match the non-verbal channel with its focus:

(i) Kinesics (a) Tone, pitch, pace of voice
(ii) Paralanguage (b) Body posture and gesture
(iii) Chronemics (c) Touch and physical contact
(iv) Haptics (d) Use of time and punctuality
  • A(i)-(b), (ii)-(a), (iii)-(d), (iv)-(c)
  • B(i)-(a), (ii)-(b), (iii)-(c), (iv)-(d)
  • C(i)-(c), (ii)-(d), (iii)-(a), (iv)-(b)
  • D(i)-(d), (ii)-(c), (iii)-(b), (iv)-(a)
View solution
Correct Option: A
Kinesics → body; Paralanguage → voice; Chronemics → time; Haptics → touch.
Q 05 Hall's Zones Hard

In Edward T. Hall's classification of distance zones, the zone used for ordinary acquaintances and colleagues is:

  • AIntimate zone
  • BPersonal zone
  • CSocial zone
  • DPublic zone
View solution
Correct Option: C
The social zone (4–12 ft) is used for acquaintances and colleagues. Intimate is closest; public is for speaker-to-audience.
Q 06 Ekman's Emotions Medium

According to Paul Ekman, the six universal facial expressions of emotion are happiness, sadness, anger, fear, surprise and:

  • APride
  • BDisgust
  • CBoredom
  • DConfusion
View solution
Correct Option: B
Ekman's six universal expressions are happiness, sadness, anger, fear, surprise and disgust. Contempt was a later candidate seventh.
Q 07 Active Listening Easy

A teacher who paraphrases what a student has said and asks "Did I understand you correctly?" is demonstrating:

  • ASelective listening
  • BPretending
  • CActive / empathic listening
  • DIgnoring
View solution
Correct Option: C
Paraphrasing and seeking confirmation are hallmarks of active / empathic listening.
Q 08 Verbal vs Non-Verbal Medium

When a speaker's words say "I am fine" but the tone and body language suggest the opposite, receivers tend to:

  • ATrust the words over the non-verbal signals
  • BTrust the non-verbal signals over the words
  • CIgnore both equally
  • DStop listening altogether
View solution
Correct Option: B
When verbal and non-verbal signals conflict, receivers typically trust the non-verbal — consistent with Mehrabian's findings.
ImportantQuick recall
  • Mehrabian (1971) 7-38-55 rule (words / tone / body) — applies to emotional content.
  • 7 Cs of effective communication: Clarity, Conciseness, Concreteness, Correctness, Coherence, Completeness, Courtesy.
  • Non-verbal channels: Kinesics (body), Oculesics (eyes), Paralanguage (voice), Proxemics (space — Hall, 1966), Haptics (touch), Chronemics (time), Artifactics (appearance).
  • Hall’s zones: Intimate · Personal · Social · Public.
  • Ekman’s six universal expressions: happiness, sadness, anger, fear, surprise, disgust.
  • Listening levels: Ignoring → Pretending → Selective → Attentive → Empathic / Active.