The Time Course And Neural Mechanism Of Individual Attentional Bias In Different Attachment Styles

Attentional bias is an important process in attention which plays a significant role in thriving. Environment character and personality are the two main factors that proved to have an effect on attentional bias. Internal working model which is formed based on interaction with important others, and information processing strategy are the most important factors that affects the process of attentional bias. Based on the cognitive psychology techniques, this research was designed to examine the relationship between attachment style and attentional bias to different information types in different exposure times, and to explore the physiological mechanism behind it.The research reported here contains two study to achieve the above objects. The first experiment employs 3*3*2*3 mixed design, and independent variables includes key stimulus (attachment name, acquaintance name, stranger name), consistency (consistent condition, inconsistent condition) and exposure times (100ms,500ms,1250ms) are within-subjects variables, attachment style (safety, avoidant, anxiety) is between variables. The results indicated that:under 100ms condition, anxiety individuals and avoidant individuals were associated with attention to the attachment name; under 500ms condition, only anxious individuals were associated with attention alert toward the attachment name. It showed that the attention bias was influenced by attachment style, stimulus type and time course. The second experiment employs 3*2*2 mixed design, and independent variables includes key stimulus (attachment name, acquaintance name, stranger name) and consistency (consistent condition, inconsistent condition), attachment style (avoidant, anxiety) is between variables. The results indicated that:in strategy processing stage, there were significant differences in N2 and LPC components between anxiety individuals and avoidant individuals, and only anxious individuals were associated with attention alert toward the attachment name. ERO analysis showed that in the alpha band all subjects had significant energy changes in the 100-300ms, and in the theta band anxiety individuals had significant energy changes in the 150-400ms.The results showed that:different attachment style of the individual in the face of attachment name will have a significant attention bias, and the attention bias has the characteristics of the time process. Specific performance:in the 100-220ms, avoidant individuals showed the obvious attentional bias to attachment name, because of the increasing energy in the range of alpha and under the condition of 100ms significant attentional bias scores; anxiety individuals have obvious attentional bias and attentional processing of attachment name in 100-600ms, because of the increased alpha band energy at 100-300ms and theta bands in the 150-400ms time period significantly increased energy, N2 (220-260ms), LPC (300-600ms) on the composition of significant change in amplitude and 500ms under the condition of significant attentional bias scores; security individuals showed nothing.