Gustav had a preference for his elder son, Meinhard (July 17, 1946 – May 20, 1971), over Arnold. His favoritism was "strong and blatant," which stemmed from unfounded suspicion that Arnold was not his biological child. Schwarzenegger has said his father had "no patience for listening or understanding your problems." Schwarzenegger had a good relationship with his mother and kept in touch with her until her death. In later life, Schwarzenegger commissioned the Simon Wiesenthal Center to research his father's wartime record, which came up with no evidence of Gustav's being involved in atrocities, despite Gustav's membership in the Nazi Party and SA. Schwarzenegger's father's background received wide press attention during the 2003 California recall campaign. At school, Schwarzenegger was apparently in the middle but stood out for his "cheerful, good-humored and exuberant" character. Money was a problem in their household; Schwarzenegger recalled that one of the highlights of his youth was when the family bought a refrigerator.