I don't know what you were expecting, but it seems to me that you might have
a basic misunderstanding of Access forms and their size attributes, and
screen resolutions and how they relate to size. An Access form is
independent of screen resolution - Access does not have any "understanding"
of screen resolution. The form, and each control on it, has a fixed size,
set in inches or cm (depending on your regional settings), and converted
internally to twips (1440 per inch, or 567 per cm). At higher screen
resolutions, a given size object (control) will occupy a smaller percentage
of the screen, as Rick Brandt explained in an earlier post.
However, there is (at least) one other factor which may cause a visual
difference in what is displayed on-screen, for a given resolution. If the
display is changed to a different dpi setting (generally via the display
setting for font size - small font equates to 96 dpi, large font to 120 dpi,
and other settings are generally possible), then systems which have the same
resolution, but different dpi settings, will display Access forms/controls
at different sizes (expressed as percentage of screen size). A control or
form will appear (approximately) 20% larger on a screen of the same
resolution set to 120 dpi rather than 96 dpi.
HTH,
Rob