"This internal factor consists of motivation, self-
esteem, observation, learning process, personality, 
and Locus Of Control (LOC). While external factors 
that can influence consumer behaviour include 
culture, social class, interaction groups, and families 
"(Kotler, 2000: 238). 
Teenagers make excessive purchases without 
paying attention to their needs but to be accepted by 
their environment, increase prestige, prestige and to 
be different from their environment. Tambunan 
(2001: 1) said that "the need to be accepted and 
become the same as other people is what causes 
adolescents to try to follow the attributes that are 
becoming fashionable and tend to behave 
consumptively". Teenagers choose and buy 
something without thinking about its benefits, 
meaning that teens are less selective in choosing 
which needs are essential and which needs are less 
important. Teenagers are potential buyers of 
products such as clothing, shoes, cosmetics and even 
food. Adolescents can be categorized as including 
consumptive behaviour if the adolescent shows 
behaviour that consumes things that are actually not 
needed excessively. The purpose of this behaviour is 
only to achieve maximum satisfaction. If teenagers 
buy goods only to gain recognition from other 
people without rational consideration, it will cause 
teenagers to become more entangled in consumptive 
behavior. Adolescents who are entangled in 
consumptive behavior will become unfulfilled. As a 
result there is a waste because teenagers spend most 
of their money to pursue prestige alone. Parents will 
certainly object if most of the money given to their 
children is used for things that are not useful. 
Student problems regarding consumptive 
behaviour at school require a relief effort. Guidance 
and counseling services are needed in order to 
conduct curative efforts related to personal and 
social problems of students. There is also a type of 
guidance and counseling services that are carried out 
in alleviating joint problems, namely group 
counseling services, this service is one of the 
guidance and counseling services in schools. Group 
counseling service is a service effort provided to 
students to be able to overcome and alleviate the 
problems they experience together, both personal 
and social, 
Group Counseling there are several techniques, 
one of which is self management technique is 
derived from cognitive behavioral modification and 
cognitive behaviorism therapy. Self management 
techniques are clumps or techniques that are rooted 
in the expansion of the theory of operant 
conditioning with social cognitive techniques (Anita, 
2009: 301). Self management in general means 
making students involved in the basic steps in 
behavior change programs. The basic assumption in 
behavioral cognitive counseling in this case is how 
the group counseling process in changing cognitive 
can play an important role in the process of self 
management and behavior changes that are 
controlled by interactions in internal and external 
events or environmental forces that influence it 
outside the group counseling session. 
Self management techniques include self-
monitoring, mastery of stimuli (control-control) and 
positive reincorcement (self-reward) (Nursalim, 
2013: 149). Practically, Self management techniques 
have advantages, namely: increasing individual 
understanding of the environment and reducing 
dependence on counselors or others, practical, 
inexpensive and easy and easy to answer. Self 
management techniques can contribute to reducing 
consumer behavior in students. Self management 
techniques in this study are a strategy of changing 
and developing behavior that emphasizes the 
importance of personal endeavors and 
responsibilities to change and develop their own 
behavior. Changing this behavior in the process is 
mostly done by the student (counselee) concerned, 
not directed or even forced by another person 
(counselor). So that in this study given a 
development of a specific group counseling 
approach model to reduce consumption, namely 
group counseling models with self management 
techniques. 
2 RESEARCH METHODS 
The type of research used is experimental (non-
parametric) research. Sugiyono (2012: 107) states 
that "experimental research is defined as a research 
method used to find out the influence of certain 
treatments on others under controlled conditions". 
The reason researchers use this experimental pattern 
is to see the effect of a treatment (group counselling 
with self management techniques) on other variables 
(consumptive behaviour). 
Research design is all the processes needed in 
planning and conducting research. This study 
included quasi-experimental design, using one group 
pre test and post test design. With this design there is 
no control group determined. With the one group 
method, pre test and post test design means that the 
sample is given a test before and after getting a 
certain treatment, so the subject is subject to two 
measurements.