Accepting these costs of media multitasking implies accepting the scattered attention hypothesis. On the other hand, some researchers (Alzahabi & Becker, 2013; Ophir et al., 2009) believe that MM may have a positive effect on cognitive control, supporting the trained attention hypothesis, which assumes that "constantly alternating between multiple media may contribute training and improving control processes" (van der Schuur et al., 2015, p.
(2009) explained the link between the scattered attention hypothesis and MM and poorer academic performance, sustaining that MM can result in deficits in cognitive control.
* Attention Hypothesis (Grinblatt, Masulis and Titman) suggests that managers use stock dividends to attract attention from the professional analysts to revalue their future cash flows.
The maximum agreement and support is for attention hypothesis, followed by signaling hypothesis and trading range hypothesis.
Hence, the Media Attention Hypothesis is as follows:
The results are displayed in Table V and provide strong support for the Media Attention Hypothesis (Hypothesis 1).
As far as the divided
attention hypothesis is concerned, it might be supposed that attention is a general cognitive resource, the amount of which is limited, and that can be divided between the different chunks of information to be processed (Anderson, 1993; Lovett, Reder, & Lebiere, 1999).
To summarize, the heightened attention hypothesis derived from Ackerman's theory and, to a lesser degree, from realignment theory makes two major predictions:
On the other hand, confirmation of the prediction would be quite strong evidence in favor of the heightened attention hypothesis.
The former notion corresponds to the contingent allocation of
attention hypothesis, where all AC effects are modulated by top down factors; whereas the latter stresses the automaticity of AC in its very beginning.
These results are consistent with Merton's attention hypothesis.
The next section summarizes the results of previous studies of changes in the roster of the Standard and Poor's Index of 500 Common Stocks (S&P 500) and presents Merton's attention hypothesis as an alternative to the price pressure hypothesis.