[OldDeckHand]

"The new study, which used magnetic resonance imaging to measure the relative size of specific structures in the brains of 49 child subjects, appears in the journal Brain Research."

Without commenting on the merits of the study's findings - maybe they're accurate, maybe they aren't - is 49 a reasonable sample size upon which to base any conclusion - especially a conclusion grounded entirely in observational science? I don't know.

[decimon]

...is 49 a reasonable sample size upon which to base any conclusion...

If the conclusion is that more study is warranted. That would be my judgment.

[dockkiller]

Is 49 a reasonable sample size?

No.