Quantitative Methods for LEL

.title[
# Quantitative Methods for LEL
]
.subtitle[
## Week 10 - Research process: An overview
]
.author[
### Stefano Coretta
]
.institute[
### University of Edinburgh
]
.date[
### 2023/11/22
]

---

## The Stroop effect

> The Stroop effect [is] a **slowing of reaction times when asked to name the color of a word that denotes a different color** (e.g., the word “red” written in green letters) as compared to when the color and denotation of a word are the same (e.g., the word “red” written in red letters), [and] reflects behavioral inhibition.

—From [Cannabinoids in Neurologic and Mental Disease, 2015](https://www.sciencedirect.com/science/article/pii/B978012417041400014X)

<br>

.f1.center[*congruent*]
]

.f1.center[*incongruent*]
]

---

## "Double trouble" variant

<br>

---

## L1 vs L2 English speakers and language proficiency

.bg-washed-blue.b--dark-blue.ba.bw2.br3.shadow-5.ph4.mt2[
- **English L1 vs L2 speakers**

- Does speaking English as your first or later-acquired language modulates the Stroop effect?
  
- **English language proficiency**

- Does the level of English language proficiency modulates the Stroop effect?
]

.bg-washed-green.b--dark-green.ba.bw2.br3.shadow-5.ph4.mt2[
**ACTIVITY**

- **Form small groups** and discuss these questions based on your knowledge and/or reasoning.

- You will fill in a poll about your expectations.
]

---

---

???

Expectations poll 1

---

## Literature review

.bg-washed-green.b--dark-green.ba.bw2.br3.shadow-5.ph4.mt2[
**ACTIVITY**

- **Form small groups** and do a quick literature search on the Stroop effect and language acquisition.

- **Fill in the shared document** with what you find (link to be sent via Learn Announcement).
]

<br>

<div style="width:100%;height:0;padding-bottom:100%;position:relative;"><iframe src="https://giphy.com/embed/7Z71Z76pCC8Za" width="100%" height="25%" style="position:absolute" frameBorder="0" class="giphy-embed" allowFullScreen></iframe></div><p><a href="https://giphy.com/gifs/hamster-jar-seeds-7Z71Z76pCC8Za">via GIPHY</a></p>

---

---

???

Expectations poll 2

---

## Experimental design

.bg-washed-blue.b--dark-blue.ba.bw2.br3.shadow-5.ph4.mt2[
- **Congruency**: Congruent, Incongruent, Doubly incongruent trials.

- 20 trials per congruency (60 trials per participant).

- **L1/L2**

- **Participants**

- Students of QML.

- 100?

- **6000 total observations** (2000 per congruency, divided by L1/L2).
]

---

## Factorial design

|    | Congruent | Incongruent | Doubly incongruent |
|----|:---------:|:-----------:|:------------------:|
| **L1** |    L1C    |     L1I     |         L1D        |
| **L2** |    L2C    |     L2I     |         L2D        |

<br>

---

---