In a 1927-32 western electric company study on the effect of lighting on worker productivity, productivity increased with each increase in lighting but then also increased with every decrease in lighting. if it is assumed that the workers knew a study was in progress, this is an example of(a) the effect of the treatment unit(b) the placebo effect(c) the control group effect(d) sampling error(e) voluntary response bias

The answer is: B) the placebo effect

Explanation:

The placebo effect occurs when people experience a benefit after an inactive substance or treatment is administered to them. The Hawthorne Experiment led to a variation of the placebo effect which is called the Hawthorne Effect.

The Hawthorne Effect occurs when the study subjects respond to the mere attention paid to them by the study personnel. The study subjects react positively just because they are being part of an experiment.

being born in poverty would limit the people's chances, opportunities and benefits.

this happen because of several things, such as:

- poor people tend to gain less access to good education and nutrition. this mean that their chance to obtain high paying jobs would also be limited.

- poor people tend to socialize with other poor people while the rich tend to socialize with other rich people. this means that simply throguh their social circle, rich people would have more business opportunities compared to the poor people.

- rich people tend to have more capital in their disposal. this would benefit them in business since it is far easier for them to fund their business operation compared to poor people.