As indicated in the video, 65% of participants went all the way to the maximum 450 volts. On average, participants gave 27 out of 30 possible shocks. The participants were ordinary people. They did not take a sick pleasure from harming Mr. Wallace. Rather, most were very upset by the whole experience. Many of them pleaded with the man in the lab coat, and some of them trembled, perspired, and dug their nails into their skin out of nervousness. When the study was re-administered to samples of women and people from a variety of countries, similar results were found. Recently, the Milgram study was replicated, but with significant modification to adhere to current ethical standards (the Milgram study has come under criticism for a number of reasons, including putting participants into such a stressful situation). This replication also found similar results. While opposites may theoretically attract, similarities and shared interests cement relationships long-term. Whether getting to know someone for the first time, fostering a deeper friendship, or coming to love someone, connecting over shared interests is key. Similar core beliefs, in terms of political, religious, and worldview beliefs, matter as well. While couples can overcome differing perspectives in these areas, especially if they are not strongly held, couples with firm beliefs in these areas typically experience extra stress if their partner believes very differently than they do.