Kotler & Keller (2000) categorize consumer goods
based on the consumers’ spending habits. The categories
consist of: shopping goods, where the consumer usually
compares various products based on their price or quality;
specialty goods, where products have unique characteristics
or certain brand identifications and where the
consumer is willing to make a special effort in purchasing
them; unsought goods or products that most consumers are
unfamiliar with and do not think to purchase; convenience
goods or products commonly and quickly purchased with
a minimal effort. Convenience goods have a subcategory
called impulse goods: goods purchased without prior planning,
or called impulsive buying in Indonesia. Kotler &
Keller (2009) explain that chocolates and magazines are
categorized as impulse goods. A chocolate brand’s packaging
design affects purchasing decisions more consistently
than does a magazine’s packaging design (namely
its cover)