Abel Ernest L, Kruger Michael L
Department of Obstetrics and Gynecology, Wayne State University, USA.
Percept Mot Skills. 2007 Dec;105(3 Pt 2):1117-8. doi: 10.2466/pms.105.4.1117-1118.
Batting and pitching records and career lengths of 312 sets of brothers who became major league baseball players were compared. Older brothers at non-pitching positions (N = 262) had significantly higher batting averages and longer careers than their younger siblings. Differences for pitchers were not statistically significant. The results corroborate other studies that firstborns are more likely than later born siblings to be higher achievers, but different factors may be operative for pitchers.
对312对成为美国职业棒球大联盟球员的兄弟的击球和投球记录以及职业生涯长度进行了比较。担任非投球位置的哥哥（N = 262）的击球平均得分显著高于弟弟，职业生涯也更长。投手之间的差异没有统计学意义。研究结果证实了其他研究的结论，即长子比弟弟妹妹更有可能取得更高的成就，但投手可能受不同因素影响。
