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{"study":"Florell","year":1971,"n.e":30,"mean.e":4.9,"sd.e":1.71,"n.c":50,"mean.c":6.1,"sd.c":2.3}
{"study":"Gruen","year":1975,"n.e":35,"mean.e":22.5,"sd.e":3.44,"n.c":35,"mean.c":24.9,"sd.c":10.65}
{"study":"Hart","year":1975,"n.e":20,"mean.e":12.5,"sd.e":1.47,"n.c":20,"mean.c":12.3,"sd.c":1.66}
{"study":"Wilson","year":1977,"n.e":8,"mean.e":6.5,"sd.e":0.76,"n.c":8,"mean.c":7.38,"sd.c":1.41}