In the attentional blink paradigm:

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The attentional blink literature focuses on how the detection of a second target (T2) is impaired when it appears within a short time after a first target (T1), specifically around 200–300 ms. This temporal window is where T2 accuracy drops the most if T1 has been processed. 
Option 1 states that the largest reduction occurs when the second target immediately follows a first target that was missed or ignored. While missing T1 can influence performance, the classic attentional blink effect is characterized by a robust drop for T2 at the 200–300 ms lag even when T1 is successfully detected, rather than only when T1 is missed. Therefore this option mischaracterizes the typical greatest impairment by focusing on misses rather than the processing of a detected T1. 
Option 2 correctly identifies the famed 200–300 ms lag as the period of maximal T2 impairment, and it specifies that T1 has been processed. This aligns with the core finding: after efficiently processing T1, the system is momentarily less capable of processing T2 that appears within that brief window. 
Option 3 claims that the largest reduction happens when T2 immediately follows a processed T1. While rapid succession can be challenging, the most pronounced blink effect is not at an immediate forward lag (0 ms) but rather at the 200–300 ms interval; therefore this option overestimates impairment at zero lag and underestimates the well-established peak at 200–300 ms. 
Option 4 proposes that the greatest impairment occurs 200–300 ms after a first target that was missed or ignored. Although missing T1 can alter overall performance in some tasks, the canonical attentional blink peak is tied to the scenario where T1 is processed, not merely missed; this makes the option inaccurate with respect to the standard paradigm. 
In sum, Option 2 lines up with the core experimental finding: the strongest T2 accuracy drop occurs at about 200–300 ms after T1 when T1 has been processed, whereas the other options describe scenarios that either shift the timing of the deficit, focus on misses rather than processing, or misstate the relationship between T1 processing and the T2 impairment.

PSYC20007_2025_SM2 Supplementary or Special Exam: Cognitive Psychology (PSYC20007_2025_SM2)- Requires Respondus LockDown Browser

In the attentional blink paradigm:

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