Experimental studies of response rates to mail surveys were reviewed and differences in response by population type were described. Cases were selected for review if they were experimental studies that manipulated a response enhancement factor. Results suggest significant differences in typical response rates for different populations. Higher…

A discussion of an experiment to determine if any relationships could be detected between college students' attitudes, demographic characteristics, and grades. (Author)

An experiment was performed to determine if unfamiliar laboratory conditions can affect infant research results. (JMB)

The study tested the prediction that enforced sensory motor sets results in longer reaction and movement times than does enforced sensory set (concentrating on the stimulus). (Author/JA)

There are a number of ways of exciting standing waves in ropes and springs using non-commercial vibrators such as loudspeakers, jigsaws, motors, or a simple tuning fork, including the rhythmical shaking of a handheld Slinky. We have come up with a very simple and cheap way of exciting stationary waves in a string, which anyone, particularly…

The aim of this paper is to show how the noise reduction by signal accumulation can be accomplished with a data acquisition system. This topic can be used for student projects. In many cases, the noise reduction is an unavoidable part of experimentation. Several techniques are known for this purpose, and among them the signal accumulation is the…

Eight laboratory exercises are described which involve the protein properties of hemoglobin, and six experiments are outlined which involve hemoglobin as a metalloprotein. (DT)

The present study examined the merits of different methods of introducing rehearsal techniques. (Author)

The experiment reported here was conducted during a 12-month period at four plants owned by the same company. Managers were given artificial reports about previous findings obtained in implementing job enlargement and job rotation programs. Led to expect higher productivity as a result of these organizational innovations, the managers increased…

Discusses experiments testing the adequacy of the common attribute-value representation for knowledge about concepts. (AM)

An experiment conducted to test whether the edited insertion of cutaways in have a measurable effect on the viewer's perceptions of the performer involved. (Author)

Article described an experiment in which students learned to investigate the sound of water particles falling over rocks as well as the change in composition of rocks as they travel along the riverbed. (RK)