Health communication
BY
BIRTUKAN GIZACHEW(BSc, MPH)
1 08/12/2025
Learning objectives
At the end of this session you will be able to:
Define communication and health communication
Describe communication goals
Explain models of communication
Describe components of communication
Explain types and forms of communication
Discuss on Principles of communication
Describe stages/skills of communication
Differentiate approaches/skills of communication
Describe barriers of communication
Discuss DOT
2 08/12/2025
Brain storming
What does communication mean?
What is HC?
Is communication mere talking???
When does talking become communication???
3 08/12/2025
Definition of communication
Communication is derived from the Latin word “communis” which means
to make common, to share information, ideas, attitude, to impart, to transmit.
Communication is the process by which two or more people
exchange/share ideas, facts, feelings or impressions in ways that each
gains a common or mutual understanding.
Health communication is the technique of informing, influencing,
and motivating individuals or large audiences about important health
issues on scientific and ethical considerations.
4 08/12/2025
Definition……..
The process always involves a sender and a receiver
regardless of the number of people concerned.
Health communication requires an appropriate design so as
transmit an effective message.
5 08/12/2025
• Types of communication
There are two types of models:
1. Linear (one-way) model - there is only unidirectional flow of
information from the source to the receiver.
The communication is dominated by the “sender's knowledge”.
(“Information is poured out”)
No mention of the feedback/interaction with the sender
used in advertising: designed to persuade the receiver to take
action prescribed by the sender.
6 08/12/2025
one way…
Advantages Disadvantages
-Faster -Little audience participation
-Orderly -Learning is authoritative
-No feed back
-Does not/little influence of behavior
7 08/12/2025
Com MODEL……..
2. Systematic (two-way) model - dynamic, bidirectional
As the message is more complex, two-way communication
becomes essential.
Information flows from the source to the receiver & back to the
source.
Audience becomes the communicator (sender) & the sender in
turn becomes a communicant (audience).
Feedback allows the sender to find out how the message is being
received- monitored and adapted to better suit the receiver’s
needs.
8 08/12/2025
Com Models…
Advantages Disadvantages
-More audience participation -Slower
-Learning is more democratic -Not orderly
-Open for feedback
-Influence behavior change
9 08/12/2025
Components/elements of communication
1) Source (sender)/Encoder
Originator of message
The sender should be the one who share similar
backgrounds with the receiver.
makes the decision to communicate.
Encoding: A process of conversation of subject matter(ideas
facts, feelings) in to symbol, signs, actions, pictures, audio-
visuals etc.
Qualities of source/Encoder
1. Empathetic -putting one self in the position of others.
2. Credibility
10 08/12/2025
Components….
2) Message (what to say)
Is a piece of information, ideas, fact, opinion, feeling or attitude
that passed from the sender to the receiver.
-It is considered important for the audience to know or to do.
It is the subject matter of communication & exists in the mind of
the communicator.
Message appeals: The way the content of the message could be
organized so that it can persuade or convince people.
11 08/12/2025
Message appeals……..
1. Fear arousal appeal
2. Humors
3. Logical / factual appeal
4. Emotional appeal
5. One sided message/appeals
6. Two sided message/appeals
7. Positive appeals
8. Negative appeals
12 08/12/2025
Message appeals……..
1. Fear arousal appeal
• The message is conveyed to frighten people into action by
emphasizing the serious outcome from not taking action.
Appropriate with people no schooling
Mild fear may be appropriate
Too much fear is not appropriate
13 08/12/2025
Message appeals…
14 08/12/2025
Fear arousal…
15 08/12/2025
Message appeals…
2. Humors
• The message is conveyed in a funny way such as cartoon.
16 08/12/2025
Message…
3. Logical / factual appeal
• The massage is conveyed to convince people by giving
facts, figures, and information
e.g. facts related to DM such as prevalence, mortality, etc.
17 08/12/2025
Message…
4. Emotional appeal
• The massage is conveyed to convince people by
arousing emotions
e.g. by showing smiling babies associating with FP
education.
18 08/12/2025
Emotional appeal…
19 08/12/2025
Emotional appeals..
08/12/2025 eneyew T 20
Emotional appeal
21 08/12/2025
Message…
5. One sided message/appeals
• Only presents the advantages of taking action
Ex. Benefits of oral contraceptives, Exclusive BF
6. Two sided message/appeals
• Presents both the advantages & disadvantages (pros’ &
cons’) of taking action.
The audiences are literates.
We are in face to face with individuals or groups
22 08/12/2025
Message…
7. Positive appeals
• Communications that ask people to do something,
e.g. breast feed your child, use a latrine.
8. Negative appeals
• Communications that ask people not to do something,
e.g. do not bottle feed your child, do not defecate in the
bush.
23 08/12/2025
3) Channel
A Channel is a physical means(a bridge) by which message
travels from a source to a receiver. = medium of communication
1. Interpersonal channels - such as face to
face communication, home visits, group
discussions, and counselling.
teaching complex skills that need two way
communications between the individual and the
health workers as a credible source of information.
24 08/12/2025
Types of Communication Channels…
2. Broadcast channels: generally provide
broad coverage for communication messages,
reaching a large number of the target
audience quickly and frequently. For example,
Radio and television
3. Print channels - such as flyers, and
posters- As timely reminder of key
communication messages.
08/12/2025 eneyew T 25
4) Receiver (Audience)
The person or a group for whom the communication is intended
or the person who receive the message.
Decoding: A mental process by which the stimuli that has been
received through the sensory organs are given a proper meaning
according to the individuals way of thinking.
The receiver converts the symbols, signs, words and pictures
etc. received from the sender to get meaning of the message
(interpreting messages).
26 08/12/2025
5) Effect and feedback
Feedback :is the mechanism of assessing what has happened on
the receiver after communication has occurred.
When the receiver of the message gives response to the sender.
Helps to understand how well the messages have been received
by the receiver, understood, interpreted, and act up on it.
Effect: is the change in receiver’s knowledge, attitude and practice
or behavior. (Positive effect/ Negative effect)
27 08/12/2025
Types of Communication
1. Intra - Personal communication
2. Inter - Personal communication
3. Mass communication
1. Intra-Personal communication
It takes place inside a person/an individual.
How people process and understand a message within.
It includes the beliefs, feelings, thoughts and justification we
make for our actions.
E.g. A person may look at an object and develop a certain
understanding.
28 08/12/2025
2. Interpersonal/ Face-to-face communication
Involving direct interaction between the source & receiver.
It means interaction between two or more people who are
together at the same time and place.
The powerful advantage of face-to-face communication over
mass media is, it gives the opportunity to ask the audience
questions and obtain their feedback.
E.g. between health extension worker and community member, a
teacher and students in a class.
29 08/12/2025
3. Mass communication
It is a means of transmitting messages to a large audience that
usually reaches a large segment of the population.
It uses mass media(Broad cast & printed media)
The powerful advantage of mass media over face-to-face is rapid
spread of simple facts to a large population at a low cost.
30 08/12/2025
Mass communication…….
Advantages
Limitations
Can reach many people quickly.
One sided(Linear)
Believable ( if credible source)
Does not differentiate the
target audience
31 08/12/2025
Forms of communication
According to the way of expression there are three
methods/forms of communication.
Forms of Communication
Verbal or oral Non-verbal Written
communication communication communication
08/12/2025 eneyew T 32
Forms of communication ………..
1. Oral or Verbal communication
It is communication by Word of mouth/ speech or talk is the
widely adopted tool of communication.
The message is received through our ear.
May also use mechanical devices such as telephone, radio, Public
address system etc.
33 08/12/2025
Forms….
2.Non-verbal communication
In a normal conversation between two persons about
35% by words &
65% of the message is conveyed through non-verbally.
The gestures we use, how we look at people, our tone of voice,
how we are seated and our clothes can all have an impact on the
way people interpret what we say.
34 08/12/2025
Non-verbal communication….
35 08/12/2025
Facial expression..
36 08/12/2025
Forms….
3.Written communication
It involves the exchange of facts, ideas, and opinions through a
written instrument /materials.
E.g. letters, notes, leaflets, reports, handouts,
newspaper.
37 08/12/2025
Communication stages
In health education and health promotion we communicate for a
special purpose.
To promote improvements in health through the modification of
the human, social and political factors that influence behaviors, a
successful communication must past through several stages.
38 08/12/2025
Stages…….
39 08/12/2025
Stages……
Stage 1. Reaching the intended audience
Communication cannot be effective unless it is seen or
heard by its intended audience.
A common cause of failure in this stage is preaching to
the converted .
e.g. Posters placed at ANC clinic
These only reach the people who attend the services and
are already motivated
Solution: Communication should be directed where
08/12/2025
40
people are going to see or hear them.
Stages…….
Stage 2. Attracting the audience’s attention
Any communication must attract attention so that people will
make the effort to listen and read it.
Attention: is the process by which a person selects part of the
message to focus on while ignoring others for the time being.
Examples of failure at this stage are:
-Walking past the poster without bothering to look at it
-Turning off the radio programs or switching over.
41 08/12/2025
Stages…..
Stage 3. Understanding the massage /perception
Once the person pays attention to a message he/she
then tries to understand it.
Perception is a highly subjective process
Examples of failures at this stage can take place when:
-Complex language
-unfamiliar technical words;
-Pictures containing complicated/unfamiliar diagrams
- Too much information
42 08/12/2025
Stage 3. Understanding………….
I ODI ZED SAL T I N Y OU R DI ET AVOI DS GOI TER
G
O
I
T
E
R GOITER IS PREVENTABLE
SEA SALT IS THE BEST SOLUTION FOR GOITER
43 08/12/2025
Stages……
Stage 4: Promoting Change (acceptance)
A communication should not only be received and
understood – it should be believed & accepted.
Credible sources enhance acceptance
It is usually easier to promote a change when they
have been -acquired only recently &
-easily demonstrated effects.
44 08/12/2025
Stages……
Stage 5. Producing a Behavior Change
Communication should be resulted in behavior change.
However, a communication may result in a change in knowledge
and attitudes but still not influence behavior
E.g. lack of enabling factors to realize the behavior
Stage 6. Improvement in Health
Communication should result in improvement in health.
If your messages are based on outdated & incorrect ideas,
people could follow your advice but their health would not
improve.
45 08/12/2025
Barriers of effective communication
Physical : difficulties in hearing, seeing
Intellectual: the natural ability, home background
Emotional: readiness, willingness or eagerness of the receiver/
emotional status of the educator.
Cultural: Customs S/he beliefs, religion,
attitudes, economic and social class
differences, language /vocabulary variation.
Status of the source of information:
-either too high or too low as compared to
the audience.
46 08/12/2025
Diffusion of innovation theory (DOI)
Community-level models: are frameworks for understanding how
social systems function and change, and how communities and
organizations can be activated.
Mostly used in market advertisement of new
technologies.
Adoption of innovation: decisions to
adopt an innovation are made only after
multiple contacts with a variety of
communication channels over a long period.
47 08/12/2025
Diffusion of innovation……
DOI:is a process by which innovation is
communicated through certain channels over time
among the members of a social system.
The four main elements of the definition
are:
I. Innovation
II. Communication channels
III. Time
IV. Social system
48 08/12/2025
I. Innovation
122
idea, practice, or object that is perceived to be new
by an individual or other unit of adoption
The Characteristics which determine an
innovation’s rate of adoption are:
1. Relative advantage
-is the degree to which an innovation is perceived as
better than the idea it replace
49 08/12/2025
Characteristics…
2. Compatibility
123
-is the degree to which an innovation is perceived
as being consistent with the existing values, past
experiences, and needs of potential adopters
3. Complexity
-is the degree to which an innovation is perceived
as difficult to understand and use.
4. Trialability
-is the degree to which an innovation may be
experimented with on a limited basis
5. Observability -is the degree to which the results
of an innovation are visible to others
50 08/12/2025
124
II) communication channels
-It is the means by which messages get from one
individual to another.
Mass media, Interpersonal etc.
III) Time
The three time factors are:
(a) innovation-decision process/The Adoption
Process/
(b)innovativeness or Adopters
(c) innovation's rate of adoption
51 08/12/2025
a) The Innovation - Decision Process
125
/The Adoption Process / - the process an
individual passes from first knowledge of an
innovation to confirmation of his decision.
52 08/12/2025
b) ADOPTER CATEGORIES
128
When people become “consumers” of an innovation they are
referred to as adopters
There are five segments (adopter categories) in the diffusion
process based on the amount of time it took to adapt an
innovation. These are;
1. Innovators 4 .Late majority
2. Adopters 5. Laggards
3. Early majority
53 08/12/2025
Adopter categories :
129
1. Innovators
Are first to adapt an innovation (they want to be first
to do something)
They are venturesome, independent, risky, daring
and desire for rush.
They have the ability to understand and apply
complex technical knowledge (mostly they are
literates).
54 08/12/2025
Innovators…….
130
Have the ability to cope with high degree of
uncertainty about the innovation.
Are few and changed very earlier.
they have higher socioeconomic status than any
other group
they require a shorter adoption period than any
other category
Accounts 2.5%
55 08/12/2025
adopter categories…
131
2. Early adopters
Are very interested in innovation, but they do not
want to be first to be involved.
Possess greatest degree of opinion leader ship in
most social systems ( are respected by peers)
And are usually successful.
Serve as role model for other members or society
the next 13.5% of the individuals in a system to
adopt an innovation
56 08/12/2025
adopter categories…
132
3. Early majority
May be interested in innovation, but will need
some external motivation to get involved.
Interact frequently with peers (sociable and
jockey)
Deliberate (check and discuss) before adopting a
new idea.
is the next 34% of the individuals in a system to
adopt an innovation.
57 08/12/2025
adopter categories….
133
4. Late majority
Are skeptical and cautious and will not adopt an
innovation until most people adopt.
one-third of the members of a system
Pressure from peers.
And adapt because of economical necessity
is the next 34% of the individuals in a system to
adopt an innovation.
58 08/12/2025
adopter categories…
5. Laggards
134
Will be the last to get involved in an innovation, if
they get involved in an innovation at all.
Isolateds in the social systems
Point of reference is in the past.
e.g. ‘Diro kere diro eko! Doro 25 santim neber’.
59 08/12/2025
adopter categories…
Suspicious of innovation
E.g. what if the ‘whites’ put virus in the
condom?
But also are usually with limited resources.
Innovation-decision making is lengthy
are the last 16% of the individuals in a system
to adopt an innovation
60 08/12/2025
16
%
34
%
34
%
13.5
%
2.5
%
61 08/12/2025
c) THE RATE OF ADOPTION
The relative speed with which an innovation is
136
adopted
Measured by number of adopters at a given time
Influenced by characteristics of the innovation
IV. SOCIAL SYSTEM
a set of interrelated units that are engaged in joint
problem solving to accomplish a common goal.
62 08/12/2025
Think the best,
Work for the best, then
Expect the best!
THANK YOU!
63 08/12/2025