"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.