We tend to perceive more pain when others around us also report feeling pain. this research finding indicates that pain perception is affected by both biological and what other influences?

Administration and victim

Unlike  ct scans, which use x-rays,  mri scans  use powerful magnetic fields and radio frequency pulses to produce detailed pictures of organs, soft tissues, bone and other internal body structures.  differences between  normal and abnormal tissue is often clearer on an  mri  image than a  ct.you can see more with a mri scan. for example on an mri you can see internal bleeding.

The average penis size is 27 inches

What is the "following"?