  We investigate the twist-3 generalized parton distributions (GPDs) for the
valence quarks of the proton within the basis light-front quantization (BLFQ)
framework. We first solve for the mass spectra and light-front waved functions
(LFWFs) in the leading Fock sector using an effective Hamiltonian. Using the
LFWFs we then calculate the twist-3 GPDs via the overlap representation. By
taking the forward limit, we also get the twist-3 parton distribution functions
(PDFs), and discuss their properties. Our prediction for the twist-3 scalar PDF
agrees well with the CLAS experimental extractions.
