Complex sentence: In effect, Wade has found extensive empirical support, in the laboratory and in the field, for Sewall Wright's Shifting balance theory, and also determined through significant mathematical modeling work that Wright's theory is robust and explanatorily powerful.
Split into simpler sentences: In effect, Wade has found extensive empirical support, in the laboratory and in the field, for Sewall Wright's Shifting balance theory. Through significant mathematical modeling, Wade has also shown that Wright's theory is robust and explanatorily powerful.