Attention Study Guide

📖 Core Concepts Attention – concentration of awareness on a particular phenomenon while excluding other information. Selective, Sustained, Divided, Orienting – four basic subprocesses: Selective: prioritizes certain stimuli. Sustained (Vigilant): keeps focus over long periods, especially on unarousing material. Divided: shares resources across multiple tasks; leads to slower, error‑prone performance. Orienting: shifts focus in space or time; can be exogenous (stimulus‑driven) or endogenous (goal‑driven). Working Memory & Executive Functions – attention supplies the “spotlight” that feeds information to working memory and is regulated by executive control (conflict resolution, response inhibition). Attentional Networks (Posner & Petersen, 1990) – three largely independent systems: Alerting – readiness, driven by norepinephrine, right frontal/parietal. Orienting – spatial selection via frontal eye fields and parietal saliency maps. Executive – conflict monitoring, anterior cingulate cortex (ACC) & dorsolateral prefrontal cortex (dlPFC). 📌 Must Remember Capacity limits: 3–6 items can be simultaneously attended (Wundt, subitizing). Inhibition of Return: slowed responses to a previously cued location after ≈300 ms. Perceptual Load Theory – high load → early selection; low load → “spill‑over” to distractors. Early Filter vs. Attenuation vs. Late Selection – three classic models of when/how selection occurs. Spotlight vs. Zoom‑Lens – spotlight = fixed‑size beam; zoom‑lens can expand/contract, trading breadth for efficiency. Feature Integration Theory – parallel registration of basic features; focused attention binds them into objects. Resource Allocation – Kahneman’s single‑pool model; modality‑specific interference is stronger when tasks share a sensory channel. 🔄 Key Processes Orienting (exogenous) Peripheral cue → automatic shift → brief enhancement → possible inhibition of return. Orienting (endogenous) Central symbolic cue (e.g., arrow) → voluntary shift → sustained enhancement, more vulnerable to cognitive load. Divided‑Attention Dual‑Task Two task threads compete for central resources → performance decrement proportional to overlap of modality/processing stage. Vigilance Decrement Prolonged sustained attention → reduced activation in fronto‑parietal vigilance network → slower RTs, more lapses. 🔍 Key Comparisons Exogenous vs. Endogenous Orienting Stimulus‑driven vs. goal‑driven; automatic vs. intentional; less vs. more affected by load. Early Filter vs. Attenuation Model All‑or‑none filter vs. weakening of unattended inputs (allows salient info like own name). Spotlight vs. Zoom‑Lens Fixed‑size high‑resolution beam vs. adjustable aperture (broader = lower resolution). Spatial vs. Feature‑Based vs. Object‑Based Attention Where → spatial region; what → specific attribute (color, motion); whole → entire object regardless of location. ⚠️ Common Misunderstandings “Multitasking = parallel processing.” → Most dual tasks share a single central pool; performance suffers unless tasks use separate modalities. “Attention is a single system.” → It comprises distinct networks (alerting, orienting, executive) with partly independent neural substrates. “High load always improves performance.” → High perceptual load reduces distractor processing but also exhausts capacity, hurting task accuracy if load exceeds limits. 🧠 Mental Models / Intuition “Beam of a flashlight” – imagine attention as a movable flashlight: the illuminated area gets richer detail; the periphery is dimmer. “Bank account of resources” – think of a single attentional budget; each task withdraws a share; when the balance hits zero, performance drops. “Traffic intersection” – the executive network is the traffic light that decides which “car” (response) proceeds when multiple streams converge. 🚩 Exceptions & Edge Cases Automaticity – highly practiced tasks (e.g., Morse code) become automatic and require minimal conscious attention, bypassing the central pool. Modality‑Specific Resources – tasks in different sensory modalities (visual vs. auditory) can partially share resources, reducing interference compared to same‑modality tasks. Exogenous orienting under high cognitive load – remains relatively robust, unlike endogenous orienting which deteriorates. 📍 When to Use Which Choose Early Filter model when the question emphasizes physical characteristics (e.g., color, pitch) driving selection before meaning. Pick Attenuation model if the scenario involves salient unattended information breaking through (e.g., hearing own name). Apply Spotlight/Zoom‑Lens when the problem asks about size of attended area and trade‑offs between breadth and processing efficiency. Use Perceptual Load Theory when the stimulus set includes a manipulation of task difficulty or number of items and asks about distractor processing. Select Resource Theory (single‑pool vs. modality‑specific) for dual‑task interference questions, especially when modalities differ. 👀 Patterns to Recognize “300 ms → inhibition of return” appears in many orienting‑cue timing questions. “High load → reduced distractor processing” signals a Perceptual Load Theory explanation. “Right frontal/parietal activation” = alerting network; “ACC/dlPFC activation” = executive control. “Automatic vs. controlled processing” cue words like “practice,” “expertise,” or “Morse code.” 🗂️ Exam Traps Distractor: “Exogenous orienting is affected by cognitive load.” – false; it is less affected than endogenous. Trap: “Late selection means no semantic processing of unattended input.” – opposite; late selection does involve semantic analysis of all inputs. Misleading answer: “Divided attention improves performance on the primary task.” – never; multitasking always incurs a cost on at least one task. Confusing “spotlight” with “zoom‑lens.” – spotlight size is fixed; zoom‑lens can change size, affecting efficiency. Over‑generalizing “attention capacity = 7±2 items.” – the outline cites a limit of 3–6 items for rapid apprehension (subitizing), not the classic 7±2 memory span.