A primary source is factual and comes from an original first hand account, such as the results of a questionnaire
A secondary source interprets the primary information, for example someone's analysis of the results of a questionnaire
Information may be required for reasons such as:
evaluatingexistingproducts
analysing a design brief
refining a design proposal
evaluating a design proposal
There's a range of methods of gathering info such as:
questionnaires
user trips
user trials
test rigs
use of secondary information
comparison to the other products
User Trips are a good method of finding out how well a product works. A user trip goes through the process of using a product.
A few things should be considered before a user trip is carried out:
the conditions under which the user trip will be carried out
the method of recordingresults
In User Trials, a product is tested by 'real users' in a relatively controlled or experimental setting where they are given a standardised set of tasks to perform.
User trials are normally used to evaluateexisting products but are often used on pre-production prototypes to identify any issues.
Test Rigs are often used to perform physical tests on products. They're often used to test prototypes as they can repeat many actions over a short period of time to simulate extended use of a product.
Secondary Information can be gathered from a range of sources such as:
books
magazines
newspaper
tv
radio
the internet
Information can be gathered by comparing to similar products. People often compare before they buy so that they can get the 'best buy'