What is the term Baltes & Baltes gave to the idea that workers deliberately try to keep crucial abilities sharp by taking additional training or periodically "brushing up"?

Michael and Franklin moved into a homelike housing arrangement for seniors who require more care than can be provided at home. This is an example of

What will be an ideal response?

Why do you see a lemon as yellow?

a) The lemon absorbs yellow wavelengths. b) The lemon reflects only yellow wavelengths. c) The lemon absorbs yellow and green wavelengths. d) The lemon reflects all wavelengths of light other than yellow.