Final answer:
The claim that duplets usually occur in simple meters is false; duplets are more commonly associated with complex or compound meters, as simple meters like iambic and trochaic consist of standard two syllable feet.
Step-by-step explanation:
The statement that duplets usually occur in simple meters is False. Duplets, or groups of two notes, beats or syllables, are not a common feature of simple meters in poetry or music. Simple meters typically have beats that can be divided into two parts. In poetry, common examples of simple meter include iambic (unstressed/stressed) and trochaic (stressed/unstressed) meters, both of which are foundational to the rhythm and are made up of two syllable feet. Duplets, on the other hand, tend to disrupt the standard rhythm of a simple meter by squeezing two notes into the space of three, and are more commonly found in complex or compound meters. In the example of a split couplet, the meter exhibits a simple rhythm: the first line is in iambic tetrameter, and the second in iambic dimeter, thus there is no indication of duplets.