WebA hypothesis (plural hypotheses) is a proposed explanation for a phenomenon.For a hypothesis to be a scientific hypothesis, the scientific method requires that one can test it. Scientists generally base scientific hypotheses on previous observations that cannot satisfactorily be explained with the available scientific theories. Even though the words …

WebNov 05, 2019 · A scientific theory summarizes a hypothesis or group of hypotheses that have been supported with repeated testing. A theory is valid as long as there is no evidence to dispute it. A theory is valid as long as there is no evidence to dispute it.

WebJul 26, 2011 · Scientific American is the essential guide to the most awe ... One prominent neurobiological theory of dreaming is the “activation-synthesis hypothesis,” which states that dreams don’t ...

WebMind & Brain coverage from Scientific American, featuring news and articles about advances in the field.

WebDec 08, 2019 · Scientific Hypothesis Examples . Hypothesis: All forks have three tines. This would be disproven if you find any fork with a different number of tines. Hypothesis: There is no relationship between smoking and lung cancer.While it is difficult to establish cause and effect in health issues, you can apply statistics to data to discredit or support …

WebJun 01, 2008 · I recently saw an old friend for the first time in many years. We had been Ph.D. students at the same time, both studying science, although in different areas. She later dropped out of graduate school, went to Harvard Law School and is now a senior lawyer for a major environmental organization. At some point, the conversation turned to …

WebTechnically, a “consensus” is a general agreement of opinion, but the scientific method steers us away from this to an objective framework. In science, facts or observations are explained by a hypothesis (a statement of a possible explanation for some natural phenomenon), which can then be tested and retested until it is refuted (or disproved).

WebJun 18, 2009 · Scientists agree, by an overwhelming majority, that the death penalty has no deterrent effect.. They felt the same way over ten years ago, and nothing has changed since then. States without the death penalty continue to have significantly lower murder rates than those that retain capital punishment. And the few recent studies purporting to prove a …

WebThe relationship between biology and sexual orientation is a subject of research. While scientists do not know the exact cause of sexual orientation, they theorize that it is caused by a complex interplay of genetic, hormonal, and environmental influences. Hypotheses for the impact of the post-natal social environment on sexual orientation, however, are weak, …

WebThen she uses that information to form a tentative answer to her scientific question. Sometimes people refer to the tentative answer as "an educated guess." Keep in mind, though, that the hypothesis also has to be testable since the next step is to do an experiment to determine whether or not the hypothesis is right!