
|
Affords a complete
record of consumer measurements over time with no gaps or missing time periods in
the data. |

|
Smoothes out the
effects of short-term disturbances such as adverse publicity, new product introductions,
bad weather, etc. In contrast, periodic tracking can be biased strongly if some negative
event occurs just as a "wave" of interviewing is conducted. |

|
Measures the effect
of seasonality on awareness & sales. |

|
Provides better
competitive information. The interviewing is ongoing and not biased to the media schedule
of one brand as tends to happen in wave tracking. |

|
Can be analyzed in
relation to other continuous data such as sales, advertising expenditures and
market share. |
Periodic or "wave" interviewing also has some advantages. Periodic tracking can
be: |

|
Concentrated into a short time interval to provide highly precise
before-after measurements for specific flights of media advertising |

|
Timed
to coincide with media schedules |

|
Less
expensive than continuous tracking |
|