Air monitor siting by objective /

Issued June 1978.

Handbook for evaluating objective prison classification systems /

"June 1992."

An English grammar conformed to present usage : with an objective method of teaching the elements of the English language /

On spine: Complete English grammar.

Objective measurement of voice channel intelligibility /

Mode of access: Internet.

An objective psychology of grammar

Mode of access: Internet.

Toward more effective management : the role of objective setting and monitoring : training materials /

"The work involved in developing and producing these materials was performed pursuant to Contract No. HEW-100-75-0055 with the U.S. Department of Health, Education, and Welfare ..."

National Cancer Program research objective : working group report, National Cancer Program Planning Conference. --

Mode of access: Internet.

Objective criteria in ceramic engineering education;

Mode of access: Internet.

Epistemic modality in Ghanaian Pidgin English

This study investigates the expression of epistemic modality in a corpus of Ghanaian Pidgin English (GhaPE). The epistemic expressions are manually identified and thereafter distinguished from each other in terms of grammatical status and their indication of different epistemic and evidential notions. 7 different elements are found, ranging from 1 pre-verbal marker, 1 adverb, 2 particles and 3 complement-taking predicates. The results indicate, in line with existing research, that to differentiate between usage properties of individual modal expressions it may be necessary to subdivide them in terms of not only epistemic but also evidential meanings. Moreover, a functional parallel between the GhaPE particle abi, the Swedish modal particle väl and the Spanish adverbs a lo mejor and igual is demonstrated, with respect to their simultaneous function of expressing epistemic probability and asking the hearer for confirmation. Finally, the results suggest, contrary to previous accounts, that the pre-verbal marker fit may indicate epistemic possibility without the addition of a preceding irrealis marker go. It is proposed that future researchers should make use of bigger corpora in order to arrive at a more ample conception of both individual modal categories and their interrelations.

Attentional blink modulation in a reaction time task: performance feedback, warning stimulus modality, and task difficulty

The present research investigated the effect of performance feedback on the modulation of the acoustic startle reflex in a Go/NoGo reaction time task. Experiment 1 (n = 120) crossed warning stimulus modality (acoustic, visual, and tactile) with the provision of feedback in a between subject design. Provision of performance feedback increased the number of errors committed and reduced reaction time, but did not affect blink modulation significantly. Attentional blink latency and magnitude modulation was larger during acoustic than during visual and larger during visual than during tactile warning stimuli. In comparison to control blinks, latency shortening was significant in all modality conditions whereas magnitude facilitation was not significant during tactile warning stimuli. Experiment 2 (n = 80) employed visual warning stimuli only and crossed the provision of feedback with task difficulty. Feedback and difficulty affected accuracy and reaction time. Whereas blink latency shortening was not affected, blink magnitude modulation was smallest in the Easy/No Feedback and the Difficult/Feedback conditions. (C) 2002 Elsevier Science B.V. All rights reserved.

The effect of stimulus modality and task difficulty on attentional modulation of blink startle

The effects of the sensory modality of the lead Stimulus and of task difficulty on attentional modulation of the electrical and acoustic blink reflex were examined. Participants performed a discrimination and counting task with either two acoustic, two visual, or two tactile lead stimuli. In Experiment 1, facilitation of the electrically elicited blink was greater during task-relevant than during task-irrelevant lead stimuli. Increasing task difficulty enhanced magnitude facilitation for acoustic lead stimuli. In Experiment 2, acoustic blink facilitation was greater during task-relevant lead stimuli, but was unaffected by task difficulty. Experiment 3 showed that a further increase in task difficulty did not affect acoustic blink facilitation during visual lead stimuli. The observation that blink reflexes are facilitated by attention in the present task domain is consistent across a range of stimulus modality and task difficulty conditions.

Attentional blink reflex modulation in a continuous performance task is modality specific

Four experiments investigated the attentional modulation of acoustic blinks during continuous spatial tracking tasks. Experiment 1 found blink magnitude inhibition in a visual tracking task. Experiment 2 replicated this finding and also found blink latency slowing. Experiment 3 varied the difficulty of the task and found larger blink inhibition in the easy condition. Blink latency slowing did not differ and was significant at both difficulty levels. Experiment 4 employed less difficult visual and acoustic tracking tasks at two levels of task load. Blink magnitude inhibition during the visual and facilitation during the acoustic task was significant during high load in both modality groups. Blink latency was slowed in all visual task conditions and shortened in the difficult acoustic task. These results indicate that attentional blink modulation in a continuous spatial tracking task is modality specific.