Founded in 1886, C.H Stoelting company was the principal American provider for the material culture of American psychology in the first half of the 20th century, and continues to operate today. This puzzle, which I believe dates to late 1940s or early 50s, appears unbranded in terms of what test it was affiliated with, though I believe Stoelting also produced materials for the Weschler IQ test (WISC.) The underside of the lid on this one is stamped "Lincoln Institute for Psychology, New York, NY.
I just think it's a great wooden puzzle, with the alternating curves and straight edges where the arms and legs attach providing cues to distinguish the quicker from the slower puzzle solver. The face and details appear to be pyrography. The puzzle itself is in great condition; the box shows wear, with the lid missing one short side. Box measures 6 1/4" x 5 3/4" x 1/2". Assembled puzzle measures 11" t x 5 1/2" w.