Strength of an argument. Logical Strength 2018-12-22

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A Measure of Perceived Argument Strength: Reliability and Validity

strength of an argument

For example, pitch in the theory of sound corresponds to color in the theory of light. More pointedly: there must be no critical disanalogy between the domains. Do determination rules give us a solution to the problem of providing a justification for analogical arguments? Of course, when evaluating analogical arguments, you must evaluate the validity of the analogies themselves that are being used to compare things. How do analogies and metaphors influence concept formation? He presented some empirical evidence to show that these three subjective perceptions were necessary for belief change to occur. Rather, explanations take the veracity of those things they are trying to explain for granted, and instead work to clarify the how and why it came to be. There is considerable debate about whether they constitute a species of deductive inference Govier 1999; Waller 2001; Guarini 2004; Kraus 2015.

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How to Write a Paper on Strengths & Weaknesses

strength of an argument

Specifically, if the scale was valid, we should expect greater perceived argument strength to be associated with more anti-drug expectations. Results from this and other research will provide evidence to further assess the applicability and utility of this self-reported measure. The fourth argument's conclusion will be true only if four or five of the next five referrals are for a person with a substance abuse problem. Second, faculty members on the research team did the same thing and produced another set of verbal descriptions. Aristotle and Mill, whose approach is echoed in textbook discussions, suggest counting similarities. The fact of the analogy is a local uniformity that powers the inference. Almost every study uses a somewhat different scale, and very rarely is there a clear rationale for the selection of scale items.

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Logical Strength

strength of an argument

This situation is in marked contrast not only with deductive reasoning, but also with elementary forms of inductive reasoning, such as induction by enumeration. The negatively phrased item unconvincing was reverse coded before analysis. If the strong and weak arguments identified by were indeed different in strength, we should see higher favorability scores and more positive attitudes from the strong condition than from the weak condition. The third added error correlation was between believability and convincingness note that convincingness was not retained in the model in study 1. First, the goodness of an analogical argument is based on the goodness of the associated analogy mapping. This requirement, though once again on the right track, seems too restrictive. The argument from likeness is thus clearly distinct from the paradeigma, where the universal proposition plays an essential role as an intermediate step in the argument.

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Analogy and Analogical Reasoning (Stanford Encyclopedia of Philosophy)

strength of an argument

What we have here is a deductively valid argumentfor an impossible conclusion, so it must be the case that one of the premisesis false. By comparison, the argument, Hardly any men are honest. According to Joseph Priestley, a pioneer in chemistry and electricity, analogy is our best guide in all philosophical investigations; and all discoveries, which were not made by mere accident, have been made by the help of it. Most of the guidelines are not directly applicable to such arguments. The principle articulated in this famous case was extended, by analogy, to allow recovery for harm against an engineering firm whose negligent repair work caused the collapse of a lift Haseldine v. The main problem is that the rule justifies too much.


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A Measure of Perceived Argument Strength: Reliability and Validity

strength of an argument

To evaluate these arguments, you must judge whether it is good or bad. It is shaped like a hamburger bun 10,000 light years thick and 100,000 light years in diameter. Can such a simple analysis of analogical arguments succeed? Explore and evaluate both sides of the argument outlining how your chosen subject matter can prove to be a strength and when it can result in a weakness. There is no way to compare the inductive probabilities of these arguments. But both mechanisms should lead to the same type of association between perceived argument strength and marijuana expectations.

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Inductive Probability

strength of an argument

The first inference dashed arrow is inductive; the second and third solid arrows are deductively valid. In other words, by not stating any rules for this type of probability revision, we avoid the difficulties noted by van Fraassen. To appreciate this, let us concentrate on confirmation as a relationship between propositions. He observed that one of the compounds— meperidine, also known as Demerol—had a physical effect on mice that was previously observed only with morphine: it induced an S-shaped tail curvature. Together, these components appear to have covered the full range of argument perceptions that existing theory and research suggest should matter.

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Logical Strength

strength of an argument

To insist on putting the conclusion in probabilistic terms distracts attention from the point of the argument. Two of the error correlations were identical to those added to the basic model in study 1 between agreement and reason, and between confidence and friends. The basic measurement model for the perceived argument strength scale was a simple one-level factor structure with one latent variable, nine indicators convincingness and novelty included , and zero error correlations. Strengths and Weaknesses Every book has its strengths and weaknesses. It supports both conservative epistemic values, such as simplicity and coherence with existing belief, and progressive epistemic values, such as fruitfulness and theoretical unification McMullin 1993 provides a classic list.

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Strength and Weaknesses of Ontological Argument

strength of an argument

Such an approach would need to be generalized to handle the kinds of arguments described in. It is impossible for some of the premise to be true and some of the premises to be false. Carnap and his followers Carnap 1980; Kuipers 1988; Niiniluoto 1988; Maher 2000; Romeijn 2006 have formulated principles of analogy for inductive logic, using Carnapian λγ rules. The thought-listing measure, while well established, has some inherent limitations that can compromise its usefulness in some contexts, such as those involving sensitive topics and non-adult populations ; ;. A difference between study 2 and study 1 is the wording of the convincingness item.

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Philioophy HW1 Flashcards

strength of an argument

Using group means as data points, we were able to assess the correlation between thought favorability and perceived argument strength on the argument level. The fundamental idea is that a good analogical argument must satisfy two conditions: Prior Association. Most of the time, however, it'ssound arguments we're interested in. At the other extreme, it could be true if 100 percent of our referrals were for people with a substance abuse problem. Analogies are used to suggest possible extensions of theoretical concepts and ideas. It contains most of the stars we are able to see at night. An argument is sound if it has some false premises.

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How do I evaluate an argument?

strength of an argument

Truth or falsity is a property of statements or premises or conclusions. That happens with explanatory analogies such as the Acoustical Analogy , and mathematical analogies such as Rectangles and Boxes. Also in past ad effectiveness research, convincingness tended to function reliably with other items when worded positively. In her 1974 , she proposes what she calls the Clustering Postulate: the assumption that our epistemic probability function has a built-in bias towards generalization. The causal condition and the no-essential-difference condition incorporate local factors, as urged by Norton, into the assessment of analogical arguments. There must be a clear connection, in the source domain, between the known similarities the positive analogy and the further similarity that is projected to hold in the target domain the hypothetical analogy.

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