Ladd-Franklin's mathematical interests ultimately led her to make important contributions to the field of psychology. In 1886, she became interested in the geometrical relationship between binocular vision and points in space and published a paper on this topic in the first volume of the American Journal of Psychology the following year. During the 1891-92 academic year, Ladd-Franklin took advantage of her husband's sabbatical leave from Johns Hopkins and traveled to Europe to conduct research in color vision in the laboratories of George Müller (1850-1934) in Göttingen, and Herman von Helmholtz (1821-1894) in Berlin, where she also attended lectures by Arthur König. In contrast to the prevailing three-color and opponent-color explanations of color vision, Ladd-Franklin developed an evolutionary theory that posited three stages in the development of color vision. Presenting her work at the International Congress of Psychology in London in 1892, she argued that black-white vision was the most primitive stage, since it occurs under the greatest variety of conditions, including under very low illumination and at the extreme edges of the visual field. The color white, she theorized, later became differentiated into blue and yellow, with yellow ultimately differentiated into red-green vision. Ladd-Franklin's theory was well-received and remained influential for some years, and its emphasis on evolution is still valid today.
Answer:A they very independent to each other
Explanation:
Answer:
i don't understand your question all so if your late start earlier!
Explanation:
Francis Cabot Lowell's textile mill at Waltham, Massachusetts, gave rise to the first labor unions in the United States.
<h3>
What are labor unions?</h3>
Since the National Labor Relations Act was implemented in 1935, labor unions have been acknowledged by US labor law as organizations that represent employees in a variety of industries. Currently, they concentrate their efforts on collectively bargaining for pay, benefits, and working conditions on behalf of their membership and representing their members in disputes with management over claimed violations of contract clauses. Larger trade unions usually take part in lobbying and electioneering activities on the state and federal levels. The majority of unions in the United States are connected with the AFL-CIO, which was established in 1955, and the Change to Win Federation (now known as the Strategic Organizing Center), which split from the AFL-CIO in 2005.
To learn more about labor unions, visit:
brainly.com/question/453055
#SPJ13
