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Posted by Sherman Whipple on February 23, 2000 at 19:00:58:
In Reply to: Re: Snowball or Purposive Sampling??? posted by Murph on February 23, 2000 at 15:48:46:
Also called a "ball of twine" or "open ended branch research'" the technique is quite common in concept or ideation testing and as a means of developing syntax and variables for a standardized survey instrument.
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