different between planful vs openended

English

From plan +? -ful

planful (comparative more planful, superlative most planful)

Having (many) plans.
(psychology) Intentional.
- 2013, David R. Shaffer, Katherine Kipp, Developmental Psychology: Childhood and Adolescence (page 207)
  Is an infant who delights in such repetitive actions as swatting a brightly colored mobile or making a toy duck quack engaging in planful or intentional behavior? Piaget said no: the secondary circular reaction is not a fully intentional response, because the interesting result it produces was discovered by chance and was not a purposeful goal the first time the action was performed.

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