using dpkg, adept or apt-get query

[pkaplan1 at comcast.net]

Is it possible to get dpkg, adept or apt-get to report the date and time packages were installed?

I am trying to determine whether a newly arising behavior on my machine is associated with the presence of a particular package, but I only know that the behavior arose yesterday and I installed several (but don't remember which) packages at different times.

Paul