Obligatory advice: If at all possible, always best to make the
dimensions of your stimulus materials exactly mathch what you want to
display during the experiment, rather than having the system resize
things for you on-the-fly.
But if you really want E-Prime to resize your image materials
on-the-fly, then set Stretch to "Yes" (and set Stretch Mode
appropriately). Also, pay attention to the Frame Width & Height --
note that the latest versions of EP set these to 75% by default,
which catches some people off guard.
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David McFarlane
Twitter: @EPrimeMaster (
https://twitter.com/EPrimeMaster)