Refreshing refers to the use of attention to reactivate items in working memory (WM). In the present study, we aimed to test the hypothesis that refreshing is closely related to memory search. The assumption is that refreshing and memory search both rely on a basic covert memory process that quickly retrieves the memory items into the focus of attention, thereby reactivating the information (Cowan, 1992; Vergauwe & Cowan, 2014). Consistent with the idea that people use their attention to prevent loss from WM, previous research has shown that increasing the proportion of time during which attention is occupied by concurrent processing, thereby preventing refreshing, results in poorer recall performance in complex span tasks (Barrouillet, Portrat, & Camos, Psychological Review, 118, 175–192, 2011). Here, we tested whether recall performance is differentially affected by prolonged attentional capture caused by memory search. If memory search and refreshing both rely on retrieval from WM, then prolonged attentional capture caused by memory search should not lead to forgetting, because memory items are assumed to be reactivated during memory search, in the same way that they would be if that period of time were used for refreshing. Consistent with this idea, prolonged attentional capture had a disruptive effect when it was caused by the need to retrieve knowledge from long-term memory, but not when it was caused by the need to search through the content of WM. The present results support the idea that refreshing operates through a process of retrieval of information into the focus of attention.
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Due to a programming error, this condition was not fulfilled on two trials in the memory search condition for eight participants. Removing these trials from further analyses did not change the observed pattern of recall performance; there was a significant difference between location and alphabet, p < .01, but not between location and memory, p = .82.
Including list length as a second within-subjects variable revealed significant main effects of task and list length, but no interaction..
Analysis was restricted to the first four processing phases, equating the numbers of trials across the different list lengths. Calculating slopes separately per list length, using all processing phases, resulted in mean slopes of 37 ms (R2 = .98), 34 ms (R2 = .98), and 36 ms (R2 = .93), for lists of four, five, and six memory items.
Barrouillet, P., Bernardin, S., Portrat, S., Vergauwe, E., & Camos, V. (2007). Time and cognitive load in working memory. Journal of Experimental Psychology: Learning, Memory, and Cognition, 33, 570–585. doi:10.1037/0278-73220.127.116.110
Barrouillet, P., Portrat, S., & Camos, V. (2011). On the law relating processing to storage in working memory. Psychological Review, 118, 175–192. doi:10.1037/a0022324
Burrows, D., & Okada, R. (1975). Memory retrieval from long and short lists. Science, 188, 1031–1033.
Camos, V., Lagner, P., & Barrouillet, P. (2009). Two maintenance mechanisms of verbal information in working memory. Journal of Memory and Language, 61, 457–469.
Conway, A. R. A., Kane, M. J., Bunting, M. F., Hambrick, D. Z., Wilhelm, O., & Engle, R. W. (2005). Working memory span tasks: A methodological review and user’s guide. Psychonomic Bulletin & Review, 12, 769–786. doi:10.3758/BF03196772
Cowan, N. (1992). Verbal memory span and the timing of spoken recall. Journal of Memory and Language, 31, 668–684.
Cowan, N. (1995). Attention and memory: An integrated framework. New York, NY: Oxford University Press.
Cowan, N., Wood, N. L., Wood, P. K., Keller, T. A., Nugent, L. D., & Keller, C. V. (1998). Two separate verbal processing rates contributing to short-term memory span. Journal of Experimental Psychology: General, 127, 141–160. doi:10.1037/0096-3418.104.22.168
Hudjetz, A., & Oberauer, K. (2007). The effects of processing time and processing rate on forgetting in working memory: Testing four models of the complex span paradigm. Memory & Cognition, 35, 1675–1684.
Jarrold, C., Tam, H., Baddeley, A. D., & Harvey, C. E. (2011). How does processing affect storage in working memory tasks? Evidence for both domain-general and domain-specific effects. Journal of Experimental Psychology: Learning, Memory, and Cognition, 37, 688–705. doi:10.1037/a0022527
Landauer, T. K. (1962). Rate of implicit speech. Perceptual and Motor Skills, 15, 646.
Loaiza, V. M., & McCabe, D. P. (2012). Temporal-contextual processing in working memory: Evidence from delayed cued recall and delayed free recall tests. Memory & Cognition, 40, 191–203. doi:10.3758/s13421-011-0148-2
McCabe, D. P. (2008). The role of covert retrieval on working memory spa tasks: Evidence from delayed recall tests. Journal of Memory and Language, 58, 480–494. doi:10.1016/j.jml.2007.04.004
Raye, C. L., Johnson, M. K., Mitchell, K. J., Greene, E. J., & Johnson, M. R. (2007). Refreshing: A minimal executive function. Cortex, 43, 135–145.
Souza, A. S., Rerko, L., & Oberauer, K. (2014). Unloading and reloading working memory: Attending to one item frees capacity. Journal of Experimental Psychology: Human Perception and Performance, 40, 1237–1256. doi:10.1037/a0036331
Sternberg, S. (1966). High speed scanning in human memory. Science, 153, 652–654. doi:10.1126/science.153.3736.652
Vergauwe, E., Barrouillet, P., & Camos, V. (2009). Visual and spatial working memory are not that dissociated after all: A time-based resource sharing account. Journal of Experimental Psychology: Learning, Memory, and Cognition, 35, 1012–1028. doi:10.1037/a0015859
Vergauwe, E., Barrouillet, P., & Camos, V. (2010). Do mental processes share a domain-general resource? Psychological Science, 21, 384–390.
Vergauwe, E., Camos, V., & Barrouillet, P. (2014). The impact of storage on processing: How is information maintained in working memory? Journal of Experimental Psychology: Learning, Memory, and Cognition, 40, 1072–1095.
Vergauwe, E., & Cowan, N. (2014). A common short-term memory retrieval rate may describe many cognitive procedures. Frontiers in Human Neuroscience, 8, 126. doi:10.3389/fnhum.2014.00126
This research was conducted with support to E.V. from the Swiss National Science Foundation (Grant No. PA00P1_139604), and to N.C. from NICHD Grant No. R01-HD-21338. We thank Suzanne Redington and Jake Lazaroff for assistance.
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Vergauwe, E., Cowan, N. Attending to items in working memory: evidence that refreshing and memory search are closely related. Psychon Bull Rev 22, 1001–1006 (2015). https://doi.org/10.3758/s13423-014-0755-6
- Working memory
- Attention and memory
- Short-term memory
- Memory search