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Nielsen Media Readership v Roy Morgan - What are the
differences
There are a number of fundamental differences between the Nielsen Media
Readership service and the Roy Morgan Single Source service. The main
differences are summarised in the following;
Data
Collection Methodology
Nielsen Media -
Face to face data collection and a leave behind self-completion for people 10+
Roy Morgan - Telephone
recruitment and mail out and return self-completion along with a 7 day media
usage diary for people 14+
The Nielsen Media Advantage
The face-to-face methodology allows for all New Zealander's 10+ to
have an equal opportunity to be selected to be interviewed. This means
that the Nielsen Media Readership study is fully representative of New Zealand.
A telephone
Methodology allows for only those New Zealander's with a home telephone to be
selected. According to our research approximately 11% of New Zealanders
do not have a telephone at home and a further 8-9% have unlisted numbers.
This means at best using this methodology only 80% of New Zealanders 10+ are
represented. Who is missing? Young people who have just left home and
flatting are the most likely not to have a landline at home and the more
affluent are the most likely not to have their number listed. These are
two very important target groups.
Because the two
services reflect different populations (Nielsen - all NZ 10+ and Roy Morgan 80%
of NZ 14+) the numbers generated from these surveys will differ and some will
differ greatly.
The Roy Morgan
methodology of leaving a 7 day media diary with respondents as well as a 100
page self completion booklet adds to the burden of the respondent.
The methodology Roy
Morgan uses in New Zealand is completely different to the methodology it
employs in Australia.
Publication
Recognition
Nielsen Media - Masthead
recognition using showcards
Roy Morgan - List in Self
Completion, all in the same font
The Nielsen Media Advantage
Nielsen uses masthead showcards to aid the respondent in recalling
what publications they have read. These showcards are grouped into
publication frequency such as weekly etc. The cards are shuffled to allow
all mastheads to have an equal opportunity of being the first shown.
Roy Morgan has a long
list of publication titles broken down by category and publication frequency.
Independent
Audit
Nielsen
Media - Independently audited twice a year
Roy Morgan - Not audited
The Nielsen Media Advantage
Nielsen is independently audited (selected and funded by the Print
industry) across a number of areas including; respondent selection, interviewer
performance, response rates, data coding and final output. Nielsen have
to meet 21 industry KPI's. This ensures that the quality of the industry
currency is consistently of a high quality.
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