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. Author manuscript; available in PMC: 2013 Jun 20.
Published in final edited form as: Semin Reprod Med. 2012 Oct 8;30(5):443–452. doi: 10.1055/s-0032-1324729

Figure 1.

Figure 1

Conceptual models for direct, mediated and moderated developmental effects.

I. Simple or direct effect model: single predictor (A) directly related to a single outcome (C) II. When the relationship between predictor (A) and outcome (C) is thought to be either buffered or intensified by another factor (C), then a suitable model is one that tests for moderation. III. A mediation model posits that the predictor (A) influences another variable (B) which, in turn, is more directly responsible for the outcome (C).