I am writing a Resident Handbook for a local Housing Authority, but
the tougher requirement is the department's need for a written defense
to justify the cost to the administration. I need to supply
professional and academic research that (1) supports a need for the
project and (2) supports or negates client's choice of design
elements, specifically, use of color and purchase of illustrations.

The Housing Department's observation that the information they present
to new residents during orientation (tour of property, verbal coverage
of rules and regulations and review of the lease agreement) is not
being retained by residents. The HD recognizes that the lease is not
designed as both a contract and a teaching device. They would like a
"plain language" reference booklet that clearly explains the items in
the lease, along with safety information and tips on caring for
property to avoid damage.

The HD wants an attention-getting design with symbolic illustrations,
at least 1 spot color used throughout, and possibly 4 color process
printing on one or two signature layouts. I have explained the impact
of color on project cost, yet while they want to defend their
requirements, they cannot find the kind of data that would back up
their choices. I will need to cite information that
(1) supports a general need for such a Handbook,
    as well as information that either supports or argues against the cost of:
(2) using colorful presentation to raise likelihood that the
publication will be read
(3) using illustrations to raise likelihood that the publication will
be understood.

I have subscription access to academic databases, but I have yet to
find material that I can use. Would you please recommend sources,
including specifics such as article IDs or www URLs, and explain how I
can best use the material you recommend?

Thanks!