 Despite extensive examination of episodic memory and future thinking development, little is known about the concurrent emergence of these capacities during early childhood. In Experiment 1, 3‐year‐olds participated in an episodic memory hiding task (“what, when, where” [WWW] components) with an episodic future thinking > component. In Experiment 2, a group of 4‐year‐olds (including children from Experiment 1) participated in the same task (different objects and locations), providing the first longitudinal investigation of episodic memory and future thinking . Although children exhibited age‐related improvements in recall , recognition , and binding of the WWW episodic memory components, there were no age‐related changes in episodic future thinking . At both ages, WWW episodic memory performance was higher than future thinking performance, and episodic future thinking and WWW memory components were unrelated. These findings suggest that the WWW components of episodic memory are potentially less fragile than the future components when assessed in a cognitively demanding task. © 2015 Wiley Periodicals, Inc . Dev Psychobiol 57: 552–565, 2015. 
