CB Models

Dr. E.
Jalaja
Consumer Behaviour Models

Models of Consumer Behaviour
 Traditional Models:
 Economic Model
 Learning Model
 Psychoanalytic Model
 Sociological Model
 Generic Model of Consumer Behaviour

Contemporary Models
 The Howard Sheth Model of Buying

Behaviour
 The Nicosia Model
 The Engel-Kollat-Blackwell Model
 Engle, Blackwell and Miniard (EBM) Model
 Rao and Lilien Model
Economic Model
 Micro Economic Model
 Explained by Alfred Marshall
 Assumptions:
 It is not possible to satisfy the customer, they have limited needs and wants.
 Customer allot budget to maximize the Utility
 No external influence, preferences don’t change
 Customers know the utility of a product hence they know the level of
satisfaction.
 Price determines the purchase
 Law of Diminishing Marginal Utility.
Economic Model
 Macro Economic Model:

 Based on Monetary Value of Goods
 According to James Duesenberry – People’s consumption is
primarily governed by peers and social groups.
 When people move up in the social class the consumption varies.
 Milton Friedman (1957) said people love to have a standard living.
Economic Model
 This model is mainly based on

 Price Effect – Lower the price of the product more will be the quantity
purchased.
 Substitute Effect – Lower the price of the substitute product, lower will be the
utility of the original product purchase.
 Income Effect – More Income, More availability of money so more purchase.
 Criticism:
 Fails to explain how does the consumer actually behave.
 Incompleteness in the Model.
Learning Model
 Human behaviour is based on some core concepts - the drives, stimuli, cues, responses
and reinforcements which determine the human needs and wants and needs satisfying
behaviour.
 Drive − A strong internal stimulus which compels action.
 Stimuli − These are inputs which are capable of arousing drives or motives.
 Cues − It is a sign or signal which acts as a stimulus to a particular drive.
 Response − The way or mode in which an individual reacts to the stimuli.
 If the response to a given stimulus is “rewarding”, it reinforces the possibility of similar

response when faced with the same stimulus or cues.
 Purchasing a product is RESPONSE, where as if the buyer goes for repeat purchase it
is REINFORCEMENT.
Learning Model
Psychoanalytical Model
 It considers that consumer behaviour is influenced by both the conscious and the
subconscious mind.
 The three levels of consciousness discussed by Sigmund Freud (id, ego and superego) all
work to influence one’s buying decisions and behaviours.
 Id: The id is responsible for primitive drives and urges. Operating on the pleasure principle,
the id avoids tension and seeks pleasure. It is also referred to as the unconscious mind.
 Ego: Ego is the conscious mind. It operates on the reality principle. It is composed of
perceptions, thoughts, memories and feelings. It provides a person with a sense of identity
and continuity.
 Super Ego: Super ego is the moral and ethical dimension of the human psychic structure. It
controls the basic desires of the id.
Psychoanalytical Model
 This model states that human needs operate at various levels of

consciousness. His motivation which is in these different levels, are
not clear to the casual observer. They can only be analyzed by vital
and specialized searching.
Sociological Model
 Believes that - consumer’s buying pattern is based on his role and

influence in his society.
 consumer's behaviour may also be influenced by the people he/she
associates with and the culture that the society exhibits.
Generic Model of Consumer Behaviour:
 Influence on Buying Behaviour - Lewin’s proposition is B = f(P, E)

which means that behaviour (B) is a function (f) of the interactions of
personal influences (P) and pressures exerted by outside
environmental forces (E).
 Consumer Behaviour - B = f(I, P) (i.e.) consumer behaviour (B) is a

function (f) of the interactions of interpersonal influences (I) such as
culture, role models, friends and family - and personal factors (P) such
as attitudes, learning and perception.
Generic Model of Consumer Behaviour
 This model suggests a stimulus-response pattern of

understanding the consumer’s behaviour.
 stimulus -marketing stimuli
 External stimuli - economy, culture, technology.
 The response - decision to buy, product choice, dealer choice and
choices regarding time, quantity, etc.
Generic Model of Consumer Behaviour:
Marketin Other Buyer’s Black Box Buyer’s Response

g Stimuli
Stimuli Buyer’s Buyer’s Product Choice
4 P’s Economic Brand Choice
Characteris Decision
Political tics Making Dealer Choice
Cultural Process Purchase Timing
Technologic Purchase amount
al
Generic Model of Consumer
Behaviour
 The consumer is at the centre of this model.
 The consumer has his/her own characteristics and a multi-staged

decision-making process.
 There are also several influencing factors acting upon the consumer.
The influencing factors may include personal and interpersonal
influences.
Contermporary models
The Howard Sheth Model of Buying Behaviour
John Howard and Jagadish Sheth (1969)
This model represents the rational brand choice behaviour by buyers when faced
with situations involving incomplete information and limited abilities.
Customer lacks well defined evaluation criteria to judge the product. They
searches for information thoroughly.
Always tries to satisfy his motives
Eg: Online shopping.

 The model refers to three levels of decision making:

 Extensive problem solving - (No Knowledge about product)
 Limited problem solving - (Little Knowledge about product)
 Routinized response behaviour - (Know well about different brands)
 Components Involved
 Input variables
 Output variables (Resulting Variables)
 Hypothetical constructs (Psychological Variables)
1. Perceptual Constructs 2. Learning Constructs
 Exogenous Variables (Environmental Forces)
Exogenous Variables
Hypothetical Constructs
 The Howard Sheth Model majorly emphasizes repetitive buying behaviour

of the consumers or industrial buyers.
 This is an empirical approach towards understanding the buyer’s mindset

while purchasing a product or service. It has been intensively applied and
tested to check its viability.
 Still, the model lacks reliability due to its dependency on the hypothetical
constructs, which are challenging to be pragmatically examined.
 Limitations:
 There is a absence of sharp distinctions between

exogenous variables and other variables.
 Some of the variables, which are not well defined, and
are difficult to measure too.
 The model is quite complex and not very easy to
comprehend
The Nicosia Model
 Proposed by Francesco Nicosia in 1970s.
 first consumer behaviour modelers to shift focus from the act of purchase itself to the
more complex decision making process.
 The model is viewed as representing a situation where a firm is designing

communications (products, ads etc.) to be delivered to consumers and in turn
consumers’ responses influence subsequent actions of the firm
 Incomplete in a number of aspects, very reductionist

 Variables in the model have not been clearly defined.
COMPONENTS OF NICOSIA MODEL
 (FIELD-I) :- the firm’s attributes and outputs or communications and

the consumer’s psychological attributes.
 (FEELD-II) :- the consumer’s search for and evaluation and of the

firm’s outputs and other available alternatives.
 (FIELD-III) :- the consumer’s motivated act of purchase.
 (FIELD-IV) :- the consumer’s storage or use of the product.

Limitations
 The flow is not completed and does not mention the various factors internal to
the consumer.
 The assumption about the consumer being involved in the decision process with
no predisposition about the various brands is restricting.
 Overlapping between firm’s attributes and consumers attributes.
 Incomplete in a number of aspects, very reductionist
 Variables in the model have not been clearly defined.

Engel-kollat-blackwell Model
 First developed in 1968 and Elaborated by James F. Engel, David T. Kollat
and Roger D. Blackwell (1973)
 This model describes the increasing, fast-growing body of knowledge
concerning consumer behaviour.
 This model is essentially a conscious problem solving and learning model
of consumer behaviour.
 Key feature of EKB model is the difference between high and low
involvement as part of buying behaviour
 High involvement is present in the high risk purchase
 Low involvement is present in the low risk purchase.
EKB Model
 In this mode Consumer Behaviour is considered as a decision making

process through 5 steps
▪ Problem Recognition
▪ Information Search
▪ Alternative Evaluation
▪ Choice
▪ Outcome
Engel-kollat-blackwell Model
Engel, Blackwell and minard model
 This model is described in Four sections

 Information Input
 Information Processing
 Decision Process
 Variables influencing decision process.
 The EBM model is very flexible and more coherent than the Howard-
Sheth Model.
 It also includes human processes like memory, information processing
and considers both the positive and negative purchase outcomes.
Rao and Lilien Model
 Rao and Lilien develop “A Model for Allocating Retail Outlet
Building Resources across Market Areas”.
 The approach provides guidelines on how many outlets

should be built in each geographical market in each of the
next 5-10 years.
 This theory argues that if many outlets are constructed in one

market areas then the sales volume in that will suffer.
 Rao and Lilien proved that relation between s (Sales Volume)and m

(Share of Market) and then show how the relation was used to develop a
model for the outlet construction decision.
 The probability that a customer will buy the company's brand on the i
th occasion, given that he bought it at t - 1, is assumed to be k1s; and
the probability that the customer buys the brand at t, given that he
bought some other brand at t- 1, is k2s, where k1 and k2 are constants.
This model implies that
m = k2s/[(1-s)+ (1+k2 – k1)s]
 Once they decided that they have to construct the
outlets then they will search for the space and will start
constructing the building
Allocating Building Resources across Market Areas =
No. of recently built company outlets /Total

company outlets
a=
No. of recently built industry outlets / Total industry
outlets
Implementation process
Model Manager
plans Plans
Agree? Yes Finish
Modify Modify
Model Managerial
inputs Assumptions
nk yo u
Th a

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Dr. E.

Consumer Behaviour Models

 Generic Model of Consumer Behaviour

 The Howard Sheth Model of Buying

 Macro Economic Model:

 This model is mainly based on

 If the response to a given stimulus is “rewarding”, it reinforces the possibility of similar

 This model states that human needs operate at various levels of

 Believes that - consumer’s buying pattern is based on his role and

 Influence on Buying Behaviour - Lewin’s proposition is B = f(P, E)

 Consumer Behaviour - B = f(I, P) (i.e.) consumer behaviour (B) is a

 This model suggests a stimulus-response pattern of

Marketin Other Buyer’s Black Box Buyer’s Response

 The consumer has his/her own characteristics and a multi-staged

John Howard and Jagadish Sheth (1969)

Always tries to satisfy his motives

Eg: Online shopping.

 The model refers to three levels of decision making:

 The Howard Sheth Model majorly emphasizes repetitive buying behaviour

 This is an empirical approach towards understanding the buyer’s mindset

 There is a absence of sharp distinctions between

 The model is viewed as representing a situation where a firm is designing

 Incomplete in a number of aspects, very reductionist

 (FIELD-I) :- the firm’s attributes and outputs or communications and

 (FEELD-II) :- the consumer’s search for and evaluation and of the

 (FIELD-III) :- the consumer’s motivated act of purchase.

 (FIELD-IV) :- the consumer’s storage or use of the product.

 Overlapping between firm’s attributes and consumers attributes.

 Incomplete in a number of aspects, very reductionist

 Variables in the model have not been clearly defined.

 In this mode Consumer Behaviour is considered as a decision making

 This model is described in Four sections

 The approach provides guidelines on how many outlets

 This theory argues that if many outlets are constructed in one

 Rao and Lilien proved that relation between s (Sales Volume)and m

Allocating Building Resources across Market Areas =

No. of recently built company outlets /Total

Agree? Yes Finish

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