Wundt does not belong with the other three names because the other three names are associated with research on attachment in psychology, while Wundt is associated with founding the first psychology laboratory and developing the method of introspection.
Mary Ainsworth was a developmental psychologist who conducted research on attachment theory and developed the Strange Situation procedure to assess attachment in infants. Harry Harlow was a psychologist who conducted research on attachment in monkeys, particularly the importance of physical contact and comfort. Konrad Lorenz was an ethologist who conducted research on imprinting in animals, particularly in ducks and geese.
In contrast, Wilhelm Wundt is known for developing the method of introspection, which involved trained participants describing their conscious experiences to the researcher. He also founded the first psychology laboratory in Leipzig, Germany, which marked the beginning of psychology as a scientific discipline. While Wundt's work was important in the history of psychology, it is not directly related to the study of attachment.