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component (F(2,34) = 5.45, MSe = 0.10, p < .01, partial eta 2 = .24). Planned contrasts revealed that there was no significant difference between specific recognition of backgrounds initially presented with an emotional or neutral object [F(1,17) = 2.32, p = .15] but the worse recognition of backgrounds presented with a negative than positive object did approach significance [F(1,17) = 4.38, p = .05]. Planned contrasts revealed significantly greater recognition for emotional than neutral objects (F(1,17) = 6.47, p < .05) and that the greater recognition of positive than negative objects approached significance [F(1,17) = 3.77, p = .07]. For general recognition there was a significant main effect of scene component (F(1,17) = 33.66, MSe = 2.19, p < .001, partial eta 2 = .66) with greater general recognition for the objects than backgrounds. There was no significant main effect of emotion, although it did approach significance [F(2,34) = 2.69, MSe = 0.03, p = .08, partial eta 2 = .14], and no significant interaction between emotion and scene component [F(2,34) = 1.91, MSe = 0.02, p = .17, partial eta 2 = .10]. Planned contrasts revealed that although there was no significant difference between general recognition of backgrounds with a neutral or emotional object [F(1,17) = 0.01, p = .93] there was significantly reduced recognition for backgrounds with a negative than positive object (F(1,17) = 5.13, p < .05). Planned contrasts revealed the greater general recognition of emotional than neutral objects did approach significance [F(1,17) = 3.55, p = .08] but the difference between positive and negative objects was not significant [F(1,17) = 0.19, p = .67]. 197
Figure 5.1: Specific and General Recognition to Negative, Neutral or Positive objects presented with Neutral Backgrounds and Neutral Backgrounds presented with Negative, Neutral or Positive objects Preference for Backgrounds A repeated measures ANOVA with the factor emotion (negative, positive, neutral) found no significant main effect of emotion [F(2,34) = 1.35, MSe = 0.41, p = .27, partial eta 2 = .07]. 198
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THE EMOTIONAL ENHANCEMENT OF MEMORY
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the memory effects. Surprisingly, t
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and motivation was waning. Most imp
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Meta-analysis: Experiments 6-10…
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negative, neutral or positive objec
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Figure 6.2. Summary of findings fro
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Table 3.5. Criteria for giving resp
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avoidance task ………………
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loved one could block their ability
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eport, physiological response and c
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Section 1.2. What effects do emotio
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due to external influences. In cont
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of naturally occurring emotions or
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ecause mood inductions generally re
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(e.g. Conway et al., 1994). Memory
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alternatives (Lockhart, 2000). The
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equired participants to distinguish
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een found when memory is assessed b
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peripheral elements of emotional an
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processing of the specific content
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failure to retrieve episodic memori
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effects on cognitive processes, eve
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ecollection and familiarity within
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emotional influence on memory. In t
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year (Dolcos et al., 2005). There a
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e suitable for investigating memory
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possible that having to distinguish
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of photographs of people, animals a
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Retrieval phase: Participants then
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y the ANOVA’s. These are only rep
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Table 2.1: Experiments 1 and 2: Res
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In these experiments the influence
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We found evidence of recognition me
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For the recognition test, which was
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Section 5. Experiments 2A and 2B: P
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items that had been seen previously
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Section 7. Experiment 2E: Recogniti
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Table 2.2. Experiment 2: Results of
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For the ‘know’ responses the ma
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Section 8. Experiment 2 - General D
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Presentation of stimuli in blocked
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It is possible that the act of maki
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enhancement can be influenced by re
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levels of memory between the positi
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the performance of any subsequent t
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experiment to provide a set of targ
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Experimental stimuli were presented
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Recognition performance in all thre
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Analysis of RKG responses We analys
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Further signal detection analysis o
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stimuli, which corresponded with mo
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could be generalised to the real-wo
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paradigm was first introduced by Tu
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The nature of recognition memory an
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The relation between Remember/Know/
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We proposed that a Remember respons
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to either the RKN or SSN memory tas
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change in a dimension (e.g., a ligh
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were prompted to indicate by key pr
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When you think the picture was not
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conducted to further analyse the ma
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interactions in the ANOVAs were fou
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Table 3.9. Same/Similar/New task: N
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Orthogonal contrasts revealed that
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Table 3.11. Remember/Know/New task:
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suitable responses were not equable
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We found that more ‘remember’ r
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say that context is easier to remem
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Levine & Bluck, 2004; Storbeck & Cl
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Figure 4.1. Examples of pairs of ne
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Familiarity i) Word frequency and w
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were not sure if there was going to
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Table 4.1. Experiment 5: Proportion
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memory for positive stimuli. These
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whether visual specificity for posi
Page 152 and 153: Figure 4.3. Examples of stimuli. St
Page 154 and 155: 0.59 (-1.65 to 2.55; 0.98) respecti
Page 156 and 157: Section 3.3. Results The data for t
Page 158 and 159: Figure 4.4. Mean average specific a
Page 160 and 161: The possibility of a response bias
Page 162 and 163: Section 4. Experiment 7: Biases in
Page 164 and 165: of an attentional encoding explanat
Page 166 and 167: esults will be found as for Experim
Page 168 and 169: of one second was displayed before
Page 170 and 171: Table 4.3. Mean responses (SE) for
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Page 174 and 175: Table 4.4. Mean average (SE) number
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Page 178 and 179: difference between scenes with a ne
Page 180 and 181: of memory for positive objects was
Page 182 and 183: independent of attention, which is
Page 184 and 185: lack of a central-peripheral trade-
Page 186 and 187: to a detriment in memory for periph
Page 188 and 189: Alternative measures of memory: Ass
Page 190 and 191: associative binding (Touryan et al,
Page 192 and 193: greatly diminish or disappear with
Page 194 and 195: Factors unrelated to intrinsic emot
Page 196 and 197: faces or places (Puri & Wojciulik,
Page 198 and 199: We predict that the pattern of memo
Page 200 and 201: ackground they had seen in the stud
Page 204 and 205: Associative Memory In the associati
Page 206 and 207: The number of fixations made were a
Page 208 and 209: longer total gaze duration on the e
Page 210 and 211: .54], nor on backgrounds of scenes
Page 212 and 213: the background when presented later
Page 214 and 215: Section 3.1. Introduction Section 3
Page 216 and 217: were then shown, preceded by a 20 s
Page 218 and 219: 2.56, p < .001, partial eta 2 = .71
Page 220 and 221: (negative, neutral, positive) and s
Page 222 and 223: object in a scene. There was no sig
Page 224 and 225: eradication of any emotional enhanc
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Page 230 and 231: Section 3.3. Results Results of the
Page 232 and 233: Planned contrasts revealed the impa
Page 234 and 235: component (object, background) inte
Page 236 and 237: ackground of the scene. There was n
Page 238 and 239: Section 3.4. Discussion There was e
Page 240 and 241: identify with eye movement recordin
Page 242 and 243: Table 5.7. Average ratings (standar
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Page 246 and 247: Figure 5.7. Specific and general re
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Section 5.3. Eye movement results T
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.01). Post-hoc Tukey’s HSD were u
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The number of fixations made on dif
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(F(1.79,5.37) = 7.12, MSe = 232535.
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emotional and neutral object [F(1,6
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Figure 5.16. Experiments 7 - 10: Av
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may be that the scenes were easier
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Chapter 6. Discussion In the final
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In chapter 4 I extended the experim
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Figure 6.3 Summary of findings from
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alternative measures of attention h
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distribution of visual attention re
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designing and conducting experiment
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contributed to the difficulty in cr
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whether these perceptual difference
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Richardson-Klavehn, 2005) with the
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High Threshold Theory (Macmillan &
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participant and the artificial prod
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References Adolphs, R. (2002). Reco
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Buchanan, T. W. (2007). Retrieval o
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Davidson, R. J. (1994). On emotion,
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Gardiner, J. M., Ramponi, C., & Ric
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James, W. (1884). What is an emotio
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Levine, L. J., & Bluck, S. (2004).
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components. Journal of Experimental
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Rowe, G., Hirsh, J. B., & Anderson,
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Talmi, D., Schimmack, U., Paterson,
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Zajonc, R. B. (1968). Attitudinal e
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Appendix 2.2. ANOVA Analyses for Ex
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Table 2.2.4. Experiment 1: Separate
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Appendix 3.2. Contamination of Retr
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Appendix 4.1 Analysis of Same, Simi
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Scene component* emotion* response
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Section 4.1.2 Analysis for Experime
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Emotion* Response type F(4,68) = 0.
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esponse F(1,17) = 0.25, New respons
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Scene component* Response type Tuke
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Same response Similar response New
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Effect ANOVA result Response type F
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Similar response New response Same
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Tukey’s post hocs: For objects Sa
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esponse F(1,17) = 1.95, Similar res
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